Well, I bought ICE on sale at Gogamer for $30 including shipping, and with the sale that went all last week I bought every single seater (I don't know if I'll ever care to fly a bomber) for another $33. So, $63 isn't that bad. I spent more for both F-19 and Falcon 3 for a single purchase, and between F4 and F4:AF I spent more on F4, and for Il-2 I bought the original, FB, Aces Exp, Pac Fighters, and 1946, so...
Oh, and I bought FE2, SF2, SF2:E, SF2:V, SF2:I, and both expansions and I think even at the cheap prices that was well over $100!
So, while comparing it to other WWI sims it may or may not come out more (after all, OFF requires CFS3 depending what you paid for that and then there's the HitR expansion), compared to other sims in general it's not...if you buy on sales.