I was over in North Carolina a couple of months ago and found that the price of a Digital Camera from a uk Internet site was about the same as Better Buys in the US. Sales tax in NC is about 8%, I don't know Florida's sales tax.
In fact alot of small electronic items are the same price either side of the atlantic, I think things like e-bay have forced the prices down here.
Do a search in google.com to find out the US and UK prices of the cameras you're interested in.
Good Luck Bargin Hunting.