<This turned out to be a much longer response than I intended. Sorry. >
I had about the same experience, mine was only a few months old. I was never asked about when I purchased it. Perusing the various forums, you'll find that it is so common for this part to break. So, it's really no surprise they replace it no questions asked. Mine took no effort to break at all, even with my girly-man sized hands. Lee replaced it, and I purchased two more levers so I wouldn't be stuck during the *next* down time.
The only reason I purchased an auto prime in the first place was due to extreme frustration with priming on the Loadmaster. After about a year of cursing, tweaking, and more cursing, I'm back to priming on the press. Though priming wasn't the only issue I had. It can be a truly frustrating piece of equipment to use until finally whipped into shape. Even now I can't help but expect it to screw up at nearly every pull of the lever.
Though I lust after an LNL, I simply can't afford one. When finances permit, I may actually get another Loadmaster so I can have one set up for small primers and cases, and the other one for large. I may be like the high school geek who has to settle for the ugly girl, but at least she's cheap and can cook when forced to. To reduce frustration and the time it may take to get one working properly, I recommend the Loadmastervideos site.
I have 4 Lee 6 cav molds. ALL drop undersize with ww, even with an additional 2% tin. I've "Leemented" them to death. Using the same alloy (or 50/50 ww/range lead), and without any tinkering what-so-ever, my Mihec 45 hp mold drops as advertised (.453 minimum). I won't be buying any more Lee molds, I don't care how cheap they are.
FCD. I recently punched the carbide ring out of my 9mm, as I wanted to try .358's in my XD9. I didn't want the FCD to resize my boolits. It doesn't seem to shoot any better and still leads like mad, but at least the press cycles sooo much easier. I don't know why, but I've also found it much easier to set the crimp. Still, I've decided the FCD is unnecessary and won't be buying any more.
The Lee adjustable charge bar has a design flaw which is why it doesn't work correctly with smaller charges. Lee has been alerted to the issue and I believe acknowledged it, but I expect will never fix it at their end. It's easy enough to fix on your own though. At least it's cheap.
Surprise, my Lee pot leaks. After the paper clip routine stops working, it's time to lap the seat again. ALL of the screws keep loosening for some reason. Sometimes the "thermostat" doesn't work until I pull it out and "tinker" with it. I don't really do anything with it, but afterward it works again, but just barely. I figure on making one of those PID's some day. At least the Lee pot has a really cheap price.
The push through sizer is cheap and does what it's supposed to do, but I've had no luck with tumble lubing regardless of concoction.
That's been my experience with Lee. BUT, I have no experience with other equipment except a rockchucker with LNL bushings and one set of rcbs dies. In a nutshell, if you like cheap or can't afford better, and you like endless tinkering or at least don't mind, then Lee stuff is right up your alley. Most of it CAN be forced to work. Just don't be shocked if/when you get to the point where you're ready to sledgehammer it. If asked to describe Lee in a single word, it could only be "cheap".