Question: I want to start a laser tag place–how much does commercial grade laser tag equipment cost and where can I buy it?

Answer: There are several Laser Engraver companies out there Epilog Laser, Universal Laser, GCC, are all name brand lasers. Or you can go with a cheaper China model Such as Rabbitlaser, or Redsail, these machines cost less but support isn’t as good.
Googling for these names should get there web.