People not following through on for sale item.

Twice now I’ve thought I sold my x pipe. First person ( autopar3000) tells me he wants it. I tear it apart box it up and give him multiple ways for shipping. I get no response! At least say I’ll pass, can’t afford it or shipping will be to much. I get nothing. Second person ( Tyler 1 ) give him good price and he asked if I was going to Indy then nothing. Again say you don’t want it. I pass other people up out of respect for the one that wanted it then I get screwed. Sorry just venting and tired or dealing with idiots!