Charity shops have been my saviour in this situation, on more than one occasion.
Stuff that some posh kid has probably only worn once.
( Moon Girl Technologies horrendous beanbag, Sat 6 Jun 2009, 18:00, archived)

Yes, I may have to go for a rummage.

( TFD is sporting this season's finest necropants, Sat 6 Jun 2009, 18:04, archived)