The recent 5906s I've handled ranged from "good" condition-grips showing a fair amount of small dings, frame and slide some holster scuffs and a few minor surface scratches-to "excellent" condition-grips showing very little if any wear and the frame and slide showing very minor holster wear.
All regardless of cosmetic condition seemed to be in excellent mechanical condition with clean bores.
Even if some have had a few thousand rounds through them, I'd expect the barrel to last for 40k rounds+ and the frame and slide at least double or triple that with tentative ease.
Bottom line: An American made semi auto with a forged barrel, frame and slide, chambered in a round that the gun is over built to handle for $299 is a steal.
Get one. Heck, pick up two if funds allow!
Best,