I've used thrusters in the $1000+ range and they tend to need maintenance every several hundred hours of use in nearly ideal situations. This isn't an easy proj

I've used thrusters in the $1000+ range and they tend to need maintenance every several hundred hours of use in nearly ideal situations. This isn't an easy project and can be very difficult for student groups (for example) to get right or to get affordable. Good luck to this project.