Just trying to sell a perfectly functional washer dryer. I was hoping it'd save me a trip to the tip and I might get £40 for it.
I've had someone ask me to take the listing down only to decide 3 days later they don't have the money.
I had someone coming to pick it up on Saturday, let me know late afternoon they would come on Sunday, then not turn up on Sunday! (and then ask if they could come next Saturday!) 
I had at least 4 people ask if they could have it cheaper than listed and could I deliver (no, the whole point was that I wouldn't have to lug it into the car)
Someone asked if they could have it for half of what I wanted, I said yes but only if it's gone today, who proceeded to have a go at me because it's unreasonable to ask for it gone today as she only drives a 5 seater.
Someone called because they were interested but insisted I guarantee it for 3 months (no, I'm not Currys).
Someone called and they were horrified that I tried to sell it but a buyer isn't able to try it out first (I explained that it is integrated and it was taken out last week and I wasn't prepared to replumb the bloody thing back in)
Meanwhile the bloody thing has been sat in my kitchen for a week!
As I being unreasonable and grabby? (It works great, it's a 2 in 1 and I advertised for £50 but will negotiate). Do people just get weird as soon as they're buying something? And, as a side note, does anyone know of any charities that will come and pick it up - id rather know someone in need has it that let it go for a tenner.
Although as I was explaining this to my friend she told me about a friend who was selling a washer, had someone come to try it out, then went to get the money out of his car but just drove away with his clean washing 
at least I've not encountered him!