I have been following the discussion about the tracker bar pump.
I agree that the pump can develop more suction than a vacuum cleaner.

I was also surprised at how the price has gone up!  It seems that $46
is a lot to pay for that simple device.

I have found that my pump fits neatly in an empty standard-size QRS
piano roll box so I can keep it handy, stored with the roll collection.

Pat DeWitt