How long will a LiteOn burner last?

Ive had mine for a few months now, and I’ve happily burned something like 70 discs thus far with it…how many more can I expect to burn before it wears out?

Well it’s rated to 70000 power on hours.

And personally I’ve wrote around 1000 discs with each of my LTR-24102B’s…still working without problems