I guess the reason for that discrepancy is that for the $90m price tag, SpaceX wants to re-use the first stage cores. In re-usable configuration, quite a bit of

I guess the reason for that discrepancy is that for the $90m price tag, SpaceX wants to re-use the first stage cores. In re-usable configuration, quite a bit of the fuel has to be used for the re-entry burns. Still interesting that they advertise the re-use price, while not having successfully landed a single core yet (admittedly, they came really close to a successful landing a couple of times).