I don't normally post this kind of thing, but these look absolutely class, so I'll put it up here and see if you like it! Focus DIY have BOGOF on these interesting Isis barstools - buy one, get one free - that's two for £40! They look really stylish, with a black and chrome finish. Delivery is £5.99 in total, so this would make a pair £46 delivered, or £23 each. If you fancy 4 stools, this would work out at about £21.50 each :)
The site says to enter one into your basket, and they will automatically send you two.
Details: Height 64-85cm, Gas lift height adjustment, Black graphite seat, Chrome base and footrest.