@db4690 The trick is, you have to know what to buy at Harbor Freight. I knew the Mityvac was gonna be crap when I bought it (although admittedly I figured it would make it through the first pull of the handle without a catastrophic failure), but it was the only tool store close to his house, my house and tools were 2 hours away, the thing was cheap, and my friend was paying for it anyway. 
But Iāve gotten several things there, like my shop crane, and a set of vehicle dollies, and little stuff like a grease gun, etc, that work just fine and cost a lot less than their āsuperiorā counterparts at good stores.
I avoid most of their hand tools (though the breaker bar I bought from them is just fine and has lasted many years) and anything that spins fast and might kill me if it breaks, but for some stuff itās silly to spend a lot more elsewhere.
Last summer we built a shed and I needed a long level to get the footings even with each other. Normal stores wanted over $100 for it. I got it for something like $19 at HF. Wouldāa been silly to pay full price for something Iām gonna use maybe 4 times in the next decade.