$200 does seem steep. But once you have it, you've got it for YEARS (literally, see my sig, and there are others here that got a REO way before I did and are still using them).
Then consider you can rebuild/rewick the RM2 for about 3-5 pennies, they last weeks. Now when I used attys, I bought bulk for a tad under $5.00 each and got *maybe* 10-14 days from them.
If you REALLY want to save, you can get unflavored nic juice for around $45 per litre.
I figure the combination of REO grand, RM2 and unflavored nic juice cost me roughly 25 cents a week.
"Need" is a subjective thing, you don't really "need" to eat either, but it makes things (living) last so much longer than not doing it, and it's far more enjoyable. My instincts tell me if you're asking the question, the decision is already made. But if justification is what you seek, just look at all the vape related stuff you have, then imagine having ONLY REO+RM2, a few spare batteries, and a bottle of ejuice
You "took a chance" with most of the vape gear you currently have, give a REO+RM2 a shot, if it's not all you expect and then some, it'll sell on the classies for just about what you paid for it. I think I remember a REO staying on the classies for 3 days...once

99% probability is, your current vape gear is what will wind up in the classies.