Very good Bryan, very good indeed. However, I'm not too sure you'll find a buyer... unless that buyer is a sadistic SOB who wants it for his ex-missus, having got theirs in the divorce settlement.
What a pity it's "Pick up only, Leeds". Had it been closer to Oz, I have an ex-missus in need of a washing machine... and 10 quid is a fair price, too. In fact, I'd pay 20 knicker for such a machine... one that opens a portal to another dimension, that is. She's probably not as big as you... not as strong, either. but with a bit of luck... well hopefully it'd be more than just her shoes and pants.... hehe.
My worry, then, would be her turning up on the 5th season of Lost, given the island's inter-dimensional properties n' all. I mean, she'd be perfect as an evil arch-nemesis to the castaways, even the evil people trying to control the island... but it would ruin my enjoyment of the show, seeing her instantly transported to the island after sucked into a washing machine.
Nah, I wouldn't want to risk it, but I tell ya what, significantly bump up the price and sell it as an inter-dimentional portal instead. Yup, advertise it as gateway to view live dinosaurs in their natural state, and you'll have palaeontologists clamouring to buy it. Just leave out the bit about the trainful of scrap[ metal sliding sideways down the street bit... that might scare off potential buyers, given impact with the bell factory would likely cause deafness.
Yup, play your cards right... like mention that it also does laundry, and you'll make enough for all the counseling you'll ever want or need... plus enough left over for a cosy villa in the Caribbean. Hmmm, given the cold weather in Yorkshire at present, that'd be nice, wouldn't it?
Yeah, I'd be changing the ad right now, if I were you. 