The Technika A70 7" Digital Photo Frame is curently selling for £19 for tesco direct online and instore
Has 8/10 rating on revoo
And can accept USB Secure Digital (SD) Multimedia Card (MMC) Memory Stick SDHC
Quote from website
Enjoy your photos everyday with this great 7" digital picture frame. With slide show functionality, you have the option to watch your pictures on rotation.