Mine has worked well for over a year now. I have used it up to 3600 psi with no issues so far...
I’ve had min for about a year now. It does take some pumping effort once it gets above 3,000 PSI. Mine has held up well for a gun I bought to air up my first PCP, a Crosman 3622. I now have a Beeman Raider and a Hatsan Flash and it is showing some wear and tear from the extra work. I paid fifty bucks for it shipped so I have no complaints and would (and probably will) buy another one. It’s a basic pump without any frills. I’d recommend it as a first pump for a small volume entry level PCP or as a back-up pump.