-1.
In addition to the reasons above, there were only 200 examples of the F4U-1C built.
In addition, it is my humble opinion that aircraft types which were very rare in RL (especially relative to subvariants of the same type) should be more expensive.
-There is no historical reason the F4U-1C should be more prevalent than the -1,A or D. For this reason I also have a problem with the prevalence of the P-47M (130 examples) and the Wirblewind (~100 examples).
-As for pragmatic reasons, as stated above, you'd be virtually eliminating very common aircraft for simple gameplay purposes.
-Aircraft perks are there because of a combination of factors. The Typhoon is faster but a far inferior dogfighter, the N1K is much slower. The C-Hog represents a sweet spot and, oh, by the way, it is CV capable. You don't just eliminate F6F and other Hog models, you take a big bite out of...well, everything else.
-The C isn't even that expensive! With all the planes available in this game, it is hard to believe you could ever feel the need to fly a perk ride so much that you'd run out of perkies...