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If I am understanding you correctly I believe you are possibly looking for a similar workflow method to theirs - https://www.printed.com/how-it-works? Can you please confirm?
With our service you can get fairly close to that using some fields with file uploading, some conditional logic, some widgets if needed such as a form calculation and inventory, and a payment integration which would be the best way that I can think of as of right now.
The only downside to it is that you won't be able to upload an image and then dynamically resize or make that work for further customization interactively on the form if that it is what you are looking for since we don't currently have anything of the sort to do something that complex. What you could do to get around that problem though would be to have pre-sized images to use as a rough draft to outline a generalized setup of the productivity for it.
If you have any other questions or need more help then just let us know via a new thread.