In my opinion, an SDS rotary hammer is one of the (few) really good tools that Harbor Freight sells. Used to cost about $60 on sale. I've used mine for dozens of holes in 50 year old concrete, and put extra hours on it using it to break up concrete where a finer touch than a sledgehammer was needed.
I was so impressed that I bought a second one as a replacement for when the first one wears out, which, it being a Harbor Freight tool, I expected to happen sooner rather than later. But it gives no signs of giving up so far. My backup could be like the backup Milwaukee Sawzall I bought fifteen years ago, figuring that with the decades of hard use I'd gotten out of the first one, it was only a matter of time. Apparently it's more time than I anticipated.
I'm not saying the H/F rotary hammer would stand up to continuous hard use. If that's how a person was going to be using it, they would be better advised to buy a Hilti, or equivalent. But for drilling holes in concrete a few times a year, I'd say this one can't be beat.