I really can't imagine baler belts only lasting 10k bales. I've got just over 20k bales on my Vermeer 605 M and the belts are still good. They do show some wear are thinner than a new belt. I know this because I baled up some sharp scrap iron a few years ago baling ditches and cut a belt. Had to splice in a new piece rather than replace the whole belt. I did have all the clips replaced in my belts at 17k bales when it was at the dealer having some warranty work done. Since having new clips put in I've been pretty good about changing my pins every 1000 bales. Sometimes in the past years if I went over 1000 bales some of the pins would be tough to get out and many of them broke into pieces. My dealer told me he had seen some where he couldn't get them out and ended up cutting the old clips out and putting new ones in. I don't ever want to have to do that so I'll make sure I change my pins every 1000 bales. Also I do set my moniter to 68 inches and usually with a big windrow by the time i get stopped after the beep the bale is at 70 or 72 inches. Not sure if thats a reason why I've got so many bales on my belts or not. I have overfilled my baler a few times too, which i don't recommend but I haven't noticed any ill effects yet. I bale a little of everything from alfalfa, to grass hay, to crp, to cattails and slough hay and its unreal some of the things I've baled up, didn't notice, and run through my vermeer hay processer. Ive baled up old T posts, many different pieces of iron, and old tire, countless rake teeth, and an aluminum step off of a semi truck. Generally pretty careful and try to pick up any junk I see but it always amazes me how much stuff never gets noticed and makes it past the mower, rake, and baler. But you always know when it goes through the bale processor lol. Most of that junk came from haying a couple miles of Highway ditches and i quit haying those ditches because of it.