Bit of an exaggeration, eh? Under $100 at the rates most people pay. Much less if you have your own T-bottle.
Maybe a bit, but less than $100 is a bit optimistic too. Let's say you use 21/35, which allow you let you go down to ~190 on PPO 1.4. Your back guess is HP100s. That is 70cf of He (~$1/cf), 42cf of O2 ($0.6/cf). Back gas alone is $95. If you add a 50% stage & and 100% deco, you breathing gas will cost more than $100. Don't forget Argon since you are using He.
I think I have to disagree with you just a bit. The whole reason that I am looking ahead is simply because I know where I want to go, and what I want to see with my own eyes. Not just look at the pictures someone brought back. For example, I really want to dive the Oriskany, but She is in 220 feet of water. I don't plan on making that dive this year or even next. But I do have a plan to make it happen in the next 3 years.
I understand that it may appear that I'm looking ahead too far, but I just see it as having a plan to do the things I want to do.
Looking forward is good. What I meant was the cost regulator at this poing of your diving training is very minimal compare to the over all cost of a 30 min dive at 220ft. So do not think your first reg will be your last. Anything you buy today, it will NOT be the last time you will buy it.
I believe this depth calls for GUE Tech2 or equivalent. If you are going GUE route, which I highly recommend, the training itself will probably cost your $5000 or more (fundie, tech1, tech2 fees, gas bill for all of these, possibly need to travel to complete them). Equipment wise, you are looking at 5 to 6 reg (2 for double back gas, 2-3 for stage/deco, 1 for argon), 2-3 wings alone the way, multiple tanks ... It costs to do tech dives.
If cost is not an issue for you. I will suggest to buy 2 set of Atomic M1. Use the 2nd set's 2nd stage as octo for your single tank. When you move to double, 2nd 1st stage come in handhy. Atomic reg is very well proven in tech diving. It is piston design, which argueably a more preferable design unless you are diving extreme cold water. 2 year service internval also help to reduce long term cost. HOG makes good reg too, just lack of time.