We no longer allow replies to classified ads. In order to make a purchase or ask a question, simply send a private message to the seller. You can do so by clicking on the seller's username and then clicking "Send Private Message."
You should be able to post an item For Sale in the classified section, you just can't post a response to someone's post. If this is the case please send me a PM.
Why the limit on responses? Seems that would allow scammers to ripoff more members by not having any posts show in public that the items had already been sold once...