I think it might depend on where you live. In this U.S. everyone is distrustful of door to door people. I automatically assume it is a scam. I would never buy meat from someone selling door to door unless I personally knew them. Also cities will often laws which require a license to sell door to door as there is concern that some may be burglars casing residences for a robbery. You also have the problem in states like Florida where some crazy old guy might pull a gun on you.
I'd stick to the internet.