Here are my costs from last fall:
$8500 new Kiss Spirit
$700 4 pin Fathom HUD (didn’t want the hardwired one from Kiss)
$1800 training
$300 for incidental during training (sorb, swivel, etc)
Travel expenses: gas, hotel, food for three full weekends four hours away in WI (I live in the Chicago area), plus one day up in Madison, WI at dive shop for classroom/pool - I never bothered to add this up.
Units can often be had used, but it depends on what you’re looking for. You may also spend a good bit restoring an older unit. Travel costs could easily run into the thousands depending on where you live and where your training is.