What's the advantage of sealing mason jars as opposed to bags? I don't mean this to sound like a challenge; I'm genuinely curious.

I wasted a litte more time online to answer part of my own question. It seems there are 3 versions of the Made in USA Dazey sealers; SAM1, SAM2 and SAM3. The first two are sealers only, the third is a vacuum sealer.

Of course there is the really cheap use-a-straw-to-suck-the-air-out-of-a-freezer-bag method.