I sold our cooker a week or two ago - buyer emailed me for our postcode (it's a buyer collects one) which I responded to straight away and asked when he'd pick it up. Didn't hear anything for a week so I emailed again. He replied saying he'd had transport issues but would give us 24hrs notice of collection (not quite what I'd thought as he'd have to fit in with us, but never mind).
He emailed this morning asking if he could collect at around 6pm. I said fine, gave our full address and asked for a contact number. Didn't hear back.
DH has just spent 45 minutes waiting in and he never turned up! DH had to go out to work so couldn't hang around any longer. I think this was a reasonable amount of time to wait and I did email twice in that time in case the buyer picked the email up.
That was fair, wasn't it? Poor DH had to sit outside the house in the cold as we're having building work done and there was nowhere inside he could get to!