I am seeing a lot more companies looking to buy ad spots inside paysite members areas as of late and i was wondering, how do you put a value on such a placement when talking about pre-paid deals?

It isnt something i have ever really looked in to before and not really something im planning on doing im just curious as to how this side of the biz actually works in terms of value, etc...

Have any of you folks ever bought or sold a pre-paid ad spot inside a members area?

Regards,

Lee