I mean… there’s always the choice of an RF (metal) Laser. 
Sure even a “cheap” RF 100w Laser is $8,000, but it “lasts 5 times longer”.
(I’ll just buy 5 glass tubes and a couple of 5200 chillers over that amount of time and still be way ahead).
But I do love RF lasers for some strange reason. My friend has one in his Epilog.
I just cannot believe how prices on glass tubes have come down SO MUCH! It makes me want to go overboard and buy another machine with a 200+ watt Yongli tube.