Need help with ideas on ecomm integration

Hi -- I'm trying to determine the best way to implement a Paypal solution for a photography website. The form integration seems straightforward enough. The challenge is that photographs are sold in multiple sizes with multiple options per size.

The experience I envision is one where selection of print size and options is separate, with the price computed properly based on the selections.

Ideally, I'd like to create a 'pricing page' the photographer uses to enter dimensions, options, and pricing. Then, on each photo page (same thing as a product page), the photographer has the ability to select sizes/options for that photo (sizes, options, and prices vary photo).

Any thoughts on how to accomplish these things would be great appreciated.

Nothing against MODX, but have you looked into Zenfolio?

you can create some MIGX-TVs for entering the different options on the pricing-page

On the product-page you can also use MIGX-TVs or checkbox/dropdown-TVs which gets the options by @EVAL-binding from pricing-page - MIGX-TVs

this is a very user-friendly way to add different options.

Eh, apologies, I failed to mention that this site uses Evolution. It appears the MIGX-TCs are for Revo.