Not sure which ones your looking for, but we get ours from Sun Data Supply or Precision Roller. Seems to be just about the cheapest options. With our V3100 booklet maker we are able to buy the cheap knock offs made in India for like 1/3 of the cost of OEM. Saves a ton and Lets me buy 6 months supplies at a time without spending a fortune.
Where do you buy your knock offs? I have always bought direct from Xerox thinking it was the only option. I do not go through a ton of staples so it is not a huge thing for us but if I can get something cheaper that works in the future would love to do that.
Have you ever had any issues with jamming or anything?
Haven't had any problems with jamming. Occasionally we do have a cartridge that will stop stapling, but i just remove a strip and it usually goes back to normal. We had that same problem with OEM occasionally too so I chalk that up to just happenstance. Even if you had to throw a cartridge or 2 away every now and then, your still coming out way ahead if you ask me. Also, we run 13-15k magazines a month through ours, so I feel like if we haven't had a problem yet then we won't and no one else would/should.