Selling Thumb Spots?!

Hello,

i have a question.

Now that my mgp www.gaycult.net is close to be finished and the traffic comes in and my trades have a productivity 100%+ i would like to sell thumb-spots at my mgp.

Well i´m new to this but it was an idea i had right now.

Anyone know where i can find a website to offer this?

Was thinking about $1.50/daily unskimmed at the mainsite and $1 skimmed.
Maximum is 30 days. At category no limit and 50% less.

Well it´s an idea for now so would be nice to get to know what you think about this and if i´m to cheap or expensive.