peekatile
One dollar reveals one random tile. The change is public and permanent.
If the unfinished board bothers you, sending it to someone else is allowed.
The honest part
The site is taking a dollar. In return it reveals one random tile, once, for everybody.
One random tile on the shared board. The result appears publicly after payment.
The picture becomes more visible as people reveal tiles. It is complete only when every tile has been uncovered.
No. Each purchase is assigned randomly from the tiles that remain covered.
The board stops accepting purchases and the completed picture remains visible.