Six 600 watt ballasts-Three 400 watt ballasts each with reflectors, half open-wing half air-cooled. Eight inline fans. Five osculating fans, 4 slim tower fans. Couple dozen smart pots and large deep dish saucers. 6 months of nutes and additives, replaced most about 4-5 times. Wood, panda film, screws, tape, plant tape, ect. Soil, perlite, worm castings, lime and ect. Other ect. Ect. Ect. Maybe 30-40 bulbs. It adds up. But all of that and everything I'm forgetting pays itself off in a single harvest.
Once you get to where want items like ballasts, fans and reflectors have a good 5+ years of life not counting bulbs, but your main expenses after you have it the way you want it is soil, nutes, bulbs, seeds(can be solved by cloning) and of course electricity. But things are always changing and new tech is slowly coming out. So unless you are very meticulous with all of your purchases it's near impossible to give an accurate price of everything paid. So many factors and each person replaces their equipment at different rates, gets better deals and some buy cheap shit others quality.
I think in 2 years of straight growing, just got my perpetual where I want it last harvest(harvest every 25-35 days) I've spent an easy 3,500 or more, a little over half of what I can make on a single harvest.
You use what you got. My first grow I had a hand-me-down magnetic 400 with a bag of year old cheap bulbs and a reflector that had rust on it, drywall buckets filled with backyard dirt and a single floor fan with no filters, intake or exhausts. Like with any hobby or love you build it up over time according to your ability and needs. Don't let your hand exceed your grasp.