Thanks to both of you. I have a good idea which camera I'm interested in, so I'll have a look at the websites.
I did look on some price comparison sites but most of the resulting stores would either not accept non american credit cards or would not deliver to hotels/apartments.
And I now know for sure that I'm staying in lake buena vista, I can't remember exactly where, but it'll come back to me, what a joke, I'm just glad I don't have to remember! But yeah, I was there 8 and a half years ago, and we found it handy for everything. Though I believe it has changed a bit in that time!
Hopefully this will take some of the pain out of finding a good deal.
Thanks again.