Almost certainly not. The majority of cable providers in the US do *not* sell the boxes to end users - they *only* lease them, and they will generally not activate a box they did not lease to you. You can ask them about it, but the odds are low. If you do buy such via eBay, it's most likely either stolen from a US cable provider, or sold by a Canadian cable customer - which would be legitimate, i.e., it's theirs to sell, but almost certainly not useful to you. I wouldn't recommend buying one off eBay from anyone in the states.