Why do some Fleet carrier owners offer above max-price for goods?

[zimms]

What sort of commodities are we talking? [..]

Mostly Gamestop shares.

 

[Treya]

(also, what's up with Rackham's Peak offers for alcohol? Hell of a party they must be having there)

That's the billionaires' club, built by one late last year in a system only reachable by carrier. One of the best views of the galaxy and selling booze there makes for enough an incentive that the system is seeing healthy traffic.