Pay Pal Buy Now Button with automated amount change over time? - dynamic

I want to create a pay pal buy now button that changes the price of my product over time in a preset amount daily. Right now I would have to manual change the price of saved buttons in Paypal.
In the call me crazy department I also would like to be able to link a price (in my case original artwork) of my product to a function that calculates the price of a product (in this case DJIA divided by X times per square foot total size of the painting... but that's just for fun as the fine art market can be very arbitrary in pricing work.

You won't be able to do that with a hosted button unless you're using the Button Manager API. If you're going to use API's, though, I'd recommend going with Express Checkout. You could hook this up to a database or just have your script calculate whatever it needs to dynamically populate the request data including the amount or anything else necessary.

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Shopify - Override Quanity Pricing

I have a helicopter tour company that wants to use Shopify to sell their tours however they have some unique options for thier pricing.
1-2 people (same price) $x 3 people
add $120 to $x 4/5/6 people
add q/w/e to $x
How can I manipulate the price based on quanity. I've looked into volumn based discount apps but problem with these is that it applies a discount code. If if I added 2, it would show 50% off.
Not using Shopify plus, so no access to the script editor.
You really do not need any custom App or other problematic install for this. You get 100 options for prices. There are zero helicopters in 2022 that fly more than 100 people. Therefore, you can arguably set a variant for each number of people that wish to fly, and assign the correct price. If you are fancy, you could then tie those to the quantity selection.
In other words, vanilla Shopify will work fine for you.

Scheduling Price Changes in Shopify Plus where my ERP can't

I have a retail website built in Shopify Plus that is fed by an ERP. A couple times a month at least, I have sale events where some (not all) items get varying levels of discounts (I'll call this my store-wide sale), but my ERP doesn't have the ability to schedule temporary price changes.
I also have unrelated discounts that happen at the item level outside the store-wide sale cycle, so the solution needs to be able these to the store-wide sale price for that item and choose the lower of the two.
I can manually change all my prices with immediate effect in the ERP to start the sale and then manually do it again to put them back to the way it was, but that's time consuming, and normally needs to happen outside business hours. If I change the price in Shopify, the ERP just over-writes them.
Is this possible? Is there a solution short of implementing a PIM that will allow me to schedule my price changes in this way?
I was thinking of potentially keeping my store-wide discounts in a metafield and/or a tag on each item and using a script to do the math, pick the best price, and change the price at the line level in cart and maybe Javascript to over-write price displayed on the PDP and PLP to show that same price.
I realised a lot of merchants needed this, so I built an app for this. I'm sure it will do exactly as you need.
https://apps.shopify.com/simple-simons-price-scheduler
If you need additional features, just submit a request via the contact form. I'm pretty quick to implement features if I feel they're beneficial.

Shopify changing product price for variation by app

I am a shopify partner, I am trying to get around the the variant limits of shopify by coding an app and also because my client has a complicated formula for calculating the price. I don't have a problem with the part that adds the information for my variants to the order, however when I want to modify the price based on the user selection, it doesn't seem an easy task to do.
I came across couple of apps which does the same thing by adding a new product or variation which is not optimal for my use case, is there any app that does the job without adding extra information to the database, if so, how?
Qualified Yes
Unfortunately, Shopify doesn't give us a lot of options to edit prices of items dynamically. Here are the two options that I know of that will allow you to adjust the price of a product directly - however, both have limitations.
Using Shopify Script Editor
If you're working with a Shopify Plus merchant, you can use the Shopify Script Editor to dynamically adjust the prices of products, provided that the direction you adjust is down. You cannot increase the price of a product using the script editor - so for your use case, the list price would have to be the most expensive possible price that the item sells for, which you would then discount appropriately using the app.
Using draft orders
Using an app, you can use Shopify's Draft Order API to create an order with custom discounts and/or create completely custom items that are independent of the products set up in the product database.
The basic flow for this is that when the customer clicks 'checkout' you halt the normal navigation, send the cart contents to your app, create a draft order with the appropriate pricing, then supply the front-end code with the draft-order checkout/invoice URL so that you can send the customer there instead of the normal checkout. This has several limitations, however, including that prices of existing products can only be discounted, not increased, and the fact that Shopify will not allow a customer to use discount codes on a draft order invoice - once an order is set up this way, Shopify's assumption is that all prices are final.
Disclaimer: Sorry if someone sensible doesn't like a response with a link :) I'm not related to this app I'm just a user.
On a project with complex pricing, we use the app Wholesale Pricing Discount by Wholesale Helper we liked because is easy to import multiple pricing by-product and relate it by customer.
this app does not multiply the products, they use customer tags. maybe that can give you some guidance.
An important rule on Shopify is you can't increase the price by API on an order, you can just reduce i

Changing quantity units on certain products in BigCommerce

Site: www.peekaboopatternshop.com
Theme: Barcelona Red v. 1.0.1
Stencil
The shop is selling both physical and digital products, and I need the quantity unit to display differently. For instance, if someone is buying fabric, the quantity box should have options like "1/2 yard, 1 yard, 1.5 yards" etc. But for a digital file I want to the quantity box to just have a standard options "1,2,3".
I played around with product options, but I can't figure out how to tie that into the inventory - if someone orders 2 yards of fabric, I need it to take 4 units off my available inventory (inventory for fabric is tracked in 1/2 yards), and I didn't see any way for my product options to affect my inventory unless I get into SKUs, which didn't seem relevant since I don't have variations available for each product.
On a separate note, I also can't seem to get the Quantity option to change from a box to a dropdown.
To have the inventory take off the correct number of units, you would need to setup the product for customers to purchase using the smallest possible unit.
So a customer would have to purchase per the 1/2 yard. Then the stock would be setup as normal. And it would deduct one for every 1/2 yard purchased.
Currently physical and downloadable are treated as separate products on the store.
There are several options:
1. Sell the physical and digital separate
2. Work with a developer to create a custom product where both are available.
3. On the product add a product option that customers can select to have someone email them the digital product later. You can also add price change rules to increase the price based on the option picked.
4. There is a app in the BigCommerce Marketplace called FetchApp that might allow this functionality also.
If you still have questions please reach out to BigCommerce support.

Zen Cart - Itemized Shipping Totals

I'm currently finishing up a fairly customized Zen Cart setup for a client and while overall the site is 99% functional when it comes to ordering, I'm having an issue on the checkout page where the customer is able to see the item totals and the sales tax, along with the grand total.
The issue however is that the grand total accounts for the shipping rate (as shown below the order form) however I'd like to also have it displayed above the sales tax line.
Does anyone know which files I'd need to access to edit the cosmetics of the checkout total?
Aside from that, I'm pretty sure I'd be able to plug in the custom values since I have the variable names on hand from coding the site till now.
Thanks very much in advance for any assistance,
The order in which the totals are displayed is determined by their sort order on the Admin >> Modules >> Order Totals page.
I've changed them this way a few times for clients, but you do need to be check that the tax calculations still work (there have been quite a few changes to recent versions to try to get that right in all cases).