Sure, the Makita bulb replacements are : "actual UV output: > 600 mW" per their website
Our #GG8BL $239 light actual UV output is >1800 mw with better heat dissipation for long life.
Our #GG9BL $119 light actual UV output is >900 mw with better heat dissipation for long life.
These numbers are lower because they are actual UV mw light output.
P.S. Richard: which light was the high dollar one ?