was in my local staples at lunchtime (nottingham) and noticed they had a Stein 7" digital photo frame in for £29.91.
so i bought one. it seems fine for a basic photo frame. has an SD card slot and unlike most cheap photo frames i've found, doesnt have any annoying writing on the frame (why would anyone want something that has the words "digital photo frame" on the bezel?!)
anyway, there were several of them on the shelf where all the photo frames are (not the clearance table). i'm assuming this will be available in most stores (although it isnt listed on the site)
heres the specs i found from a google search:
Brightness in Candela/m²: 350
Horizontal Resolution in Pixel: 480 pixel
Loudspeakers: with Loudspeakers <--- i can't see any speakers, but they may be hidden round the back...
Memory Card Slot: Yes
MP3 Playback: No
Remote Control: without Remote Control
Screen Format: 16:9
Screen Size in Inches: 7 in
USB: with USB
Vertical Resolution in Pixel: 234 pixel
Wireless LAN: No