Photographer payment / delivery tool

VirtualTourYYC

Hi guys
I am a photographer. I deliver content to customers all the time, I'd like to setup a pay wall so the customer can't download photos until they are paid for.
I haven't seen anything out there on the market like this. You could be the accounting vendor millions of photographers have been looking for.

I usually send a preview of the photos in a screen shot but it's often not good enough.

I'd like to be able to upload my assets to wave, then have a link on the invoice to view the assets with limited size and maybe a water mark?

Then when it's paid allow them to download the full version.