Bought one of these and had nothing but trouble with it. It wouldn't vacuum seal any of my items after about a month. The company sent me a new part for my machine, and it worked, but then none of the extensions would work (for the containers, etc.). Finally I was able to return it for a full refund.

I then bought a more expensive version after very carefully reading all the reviews on them. My new one has been great. Bottom line - don't go with the cheap version, and read all reviews before purchasing!!!!!