It's been over a year now and mine's hasn't fail me.
I bought it used too. My guess that it's like 2-3 years old, no problems, it always opens and closes perfectly.
Apexi product, Always top notch parts/equipments. They are better than good, they are the best!
130 is pretty cheap, buy it.
If you want to compare it to others, i suggest you make another thread, because its sort of starting out specific already.