Looks like a very useful product, unfortunately your website doesn't work.
Had to add 2 x product before it showed up in the cart, and then couldn't remove 1.
Went to check out and my cart was empty.
If you're serious about this, do yourself a massive favour and don't use Wix especially for the cart as it clearly doesn't work.
I dread to think how many sales you've missed.
CollageMo