Went in last week but forgot to mention this. All PS1 and Xbox games are 49p Nationwide: Used obviously. Some good deals in there: I picked up about 10 games I've been after - which retail used around 2-5 quid each! still usual price online.I asked the guy at the till and he said it was something to do with clearing some older stock out.
Couldn't see this on the site, closest I could find was marked as expired from ages ago.
Also worth noting if you don't own the consoles:
PS1 + 1 control (Prob not DualShock) - 2.99 or psone for 4.99
Xbox with 1 control - 14.99