If you are posting a WTB (Wanted to Buy), you will likely be contacted by a scammer or two. Normally they say something like...
"I know a guy that might have one in this forum, he goes by @Username I haven't seen him on here for couple of days...
Signal range is a complex issue and you can't expect to achieve the Max Transmission Distance any time you fly.
Actual range is going to vary considerably with local interference levels and the amount of trees or other obstacles between you and...