I love harbor freight. Especially for things like saw blades, drill bits, tarps, etc. I think the tools are more Homeowner grade than Contractor grade but they certainly work OK and seem to last.
I recently ( 2weeks ago) began building a new shed and when I went to pick up my $400+ Craftsman compound mitre saw the plastic handle shattered and that was the end of that tool. Harbor freight had a comparable saw for about $150 but unfortunatly due to the pandemic and everyone home doing repairs they were sold out. They were also sold out of saw tables, air nailers, air paint sprayers, and a few other things. I wound up paying $100 more at home depot for the compound mitre saw. I'm going back today to see if they have the saw tables back in stock. It cost under $50 with the 20% discount coupons. Before breaking my saw I bought a 10" blade for $15 that cost $30 at home depot. A 7 1/4" circular saw blade was only $5.00
Other than out of stock items I've never had a problem with them.