That seems like a fair review. The only things I've needed to do in about a decade was to replace the nylon hose (readily available from many suppliers and therefore cheap). It cracked after a half-decade of sitting outside with corrosive used oil sitting it. I also got a somewhat longer piece so I could have the tool sitting firmly on the ground and still reach the bottom of the sump. It seems like they could have given an extra couple feet without breaking the bank.

One thing to note: you'll need about 5 CFM @ 90 psi to run the venturi, which is more than a little pancake compressor can give, but otherwise isn't crazy for even a medium portable compressor. If you don't have an air compressor and weren't planning to get one, I think they probably make a powered pump version and that would be a better choice.