Recently there was a a vendor on eBay.co.uk selling a stock of verizone iPad2's 64's
I asked the same question if it was jail broken,and he honestly advised 3G can't work in UK, but is the same in all other respects.
Being supplied from in the uk you will have no issues with import duties, you also have 3 months warranty from the vendor.
So depends imho on how vital the iPad2 will be ti you, it is not a cheap bit if kit to buy and we all love savings, but what happens if it did go wrong has to be considered, in making your decision to take a calculated rusk and buy off shore ti save money, or not and have reassurances but for more money.
Regs
ipadbraincell