Doesn't make any sense. FdL are losing far more money on the discounted Cobra's than they'd gain from the additional paint-jobs.
The ships are sold by fictional companies for fictional money. The paint jobs are sold by a real company for real money. It's a little metagame that FD are playing on us.
(For the record, I am totally fine with that happening, I just prefer to point out the elephant in the room.
I don't think you're more likely to buy a skin with real money because you are able to more easily buy the in-game ship pre-wipe in a beta. I think it's more likely they wanted to make sure that people who *did* buy it, could access the cobra.
I think it works both ways.