PrintMosaic allows you to host this website as your own! This allows you to sell mosaics to your own clients, under your own brand.
This is entirely free. PrintMosaic only collects a small fee when you make a sale.
Here is how it works:
You simply need a Stripe account or your own payment page.
Setup the articles you want to print mosaics onto. Those can be posters, canvas, an iphone case or anything you can print onto.
Once you have added your customer html snippet on your site, your customers can start building their own mosaics and purchase them from you.