There are some serious problems with the pricing of the stuff on the allied seal vendor.

Five ventures (GC Seal cost: 1000) cost ten allied seals.
One reagan pepper (GC Seal cost: 48,000) costs twenty allied seals.

AF2 armor costs 30/40 seals each (20 for accessories).
Green ilvl 70 GC armor costs 600/1000 seals each.

I get that the grand company gear can be used for glamour, but is it really supposed to cost twenty to twenty-five times as much as AF2? You can outfit three and a half jobs in full AF2 for the price of ilvl 70 boots that may or may not even have a unique skin.

The cost ratio of major:minor armor pieces isn't even consistent.

The two minions are different prices as well, although that may be intentional.