Originally Posted by Paul Markham

Maybe it's something limited to sellers with their own merchant account. But if doable it's a good idea.

Here's anther one.

How about a 5 day, or could be 10, 15, 100 day, membership that is exactly that. Every separate day the member logs in he loses one of the days he bought. Rather than it going over a 30 day time period he gets 30 days of his choice.