Lens Ripoffs

Hi Guys;
Eighteen years ago I bought my first laser, a Laserpro Mercury, a good machine but limited bed size, for about $27K with lenses costing about $300 each
.
Nine years ago I bought a dual tube 80 watt Shenhui for about $8K with lenses costing about $40 each.

Recently I bought a dual tube 130 watt Quantom laser for about $9k with lenses costing about $20 each.

Since I retired the Laserpro, I decided to use the $300 lenses in the new machine to see if quality (which was good) would improve.

RESULT?: No difference between the $300 lens and the $20 lens

Caveat Emptor- "let the buyer beware"
Best regards;
GM Perzel