This system is still a friendly one.
If it was all business, there would not be a forum to chat in nor would we allow replies on the auction threads.
If you don't have an "out of ordinary" amount of threads it is free.
Change is never easy, especially when you have been used to unlimited free sales threads.
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Now as a seller (and buyer) I am happy to help out the costs of running this site with the small fees that will be charged when I run over my limit. (Yes, I will pay, too and gladly!)
Many forums have memberships or a "donation" option,but I would rather pay for a service than make a non tax deductible donation and get nothing in return.