Ill say this :
should this have an oil pump
and the bags come from a ' general ' source
my old source
its well worth looking into .
if a dry pump , then , its longevity might be different .
how large are the largest bag it fits ?
what vacuum does it pull ?
the lid looks flat , vs a dome
dome might support higher vac's
which might not really be important
the price seems attractive
if well made and the bag size is not proprietary
and water vapor does not damage it
might be a fine item for home use
ed,: 100 bags , $ 30 USD :: $ 0.30 // bag.
$ 0.04 // bag ( back in the day ) wild be more interesting .