I've had not so great luck with Harbor Freight power tools, but I do own two of their fixed speed multi tools. When on sale, these are only about $14 each and quite a bargain. If they survive several hours of use, they easily justify their cost. These newest ones are #3 and 4. I wore out my first multi-tool. The nubs on the blade grip wore off and the blade wouldn't stay tight. The second multi-tool fell apart in about 20 minutes of use. I was going to combine the two to get one good one from the parts, but when they went on sale this time I picked up two more, and have the other two for spare parts. #3 has about 1/2 hour of use so far and it's running fine, so far. #4 hasn't been used yet. The big problem with Harbor Freight tools is their Quality Control Department......There doesn't seem to be any. So you, the user, gets to discover the lemons. You may get a good one, but with my kind of luck, I usually do not. If you discover what you purchased is a lemon within the first 30 days, you can exchange it. After 30 days you get to pay full price for another, or a better quality one at a higher price from someone else. The hassle of a tool going bad on me during a project is something that I just can't stand. I have too little time to get things done to have to stop and go shopping for a replacement tool in the middle of a project, but these multi-tools are so cheap that just one use usually justifies their cost. If they survive for more than one project, they have fully justified their cost. I just plan on keeping spares from now on.
A couple of years ago my #2 son bought a 1/2" drill from Harbor Freight. He was drilling 1/4" holes in a mild steel plate with a new drill bit. The first 6 or so holes went well. During the next 3 the drill was getting very hot, even though he was letting it cool for a couple of minutes between each hole. I think it was on the tenth hole that fire came out of the vent holes, and the drill was headed back to Harbor Freight, less than one day after it was purchased. My son got his money back, went to Lowes and bought a DeWalt to replace it, of course at a considerably higher price. I couldn't tell you how many holes that DeWalt drill has drilled, but he was able to finish that project and many more without the DeWalt drill getting even seriously warm.
I have purchased many non-powered tools from Harbor Freight. Some are great bargains, and some are definitely not. I usually decide if the savings is worth the gamble, and base my buying decision on that. My nearest Harbor Freight store is 3 miles from my home, so it's easy to take things back, but I still don't like having to stop the project and go shopping for a replacement. If I was living somewhere where shipping would be involved in returning defective merchandise, I doubt that I would buy anything from them.
Charley