Richard,
You could try EBuyer, check out
Extra Value 10 inch Hi-Resolution Digital Photo Frame Silver with Remote Control - Ebuyer
I've used them a lot over the years for work stuff and they have been competitive and reliable
I bought this digi frame for my better half and it has been excellent - I particularly wanted one that ran a slide show - some of the cheaper ones don't - and it can use a variety of media.
Apparently Kodak were offering a frame that you could link to their website so potentially connect from anywhere in the world and "easily" send stuff to family abroad. I only found this out after I had bought this one but equally they were not cheap, the download flakey and not very user friendly for aged parents to manage.
So I'm more than happy with what I got.