I think perk price is going to have a much bigger impact. For a lot of people, perks are as much a psychological roadblock as an actual fiscal one. I have more than enough perks to loose a couple sets of 234s, but I still fly them very cautiously and plan my flights out religiously. I rarely fly the 262 even though I could loose a half dozen of them, and when I do, I'm much less aggressive than with an unperked plane. I foresee the B-29 falling into a similar role.
(Assuming it is won and perked, we don't actually know yet)