We don't pay them for the link. Since it went up four months ago, the discount code has generated about $1700 in revenue per month, which is $1100 in profit.
For internal reasons, we wanted to place a value on this link. We expect it to persist for a while, this stickied post has been around for over two years and doesn't change.
How much would you say such a link is worth, given the revenue it's been generating?