Even Bluefin/Tamashii was selling Normal Vegeta for $75 at the booth, apparently. That's weird.
Bluefin is just a distributor, so selling items at a slight price hike is not out the norm for them. They could use the extra profit to help their own business costs and also cover expense costs from going from Con to Con. But they are selling items at cheaper prices than their current market values. They were also selling the Figuart ZEROs for $35 each (except Goku, he was $40), they had D-Arts Mega Man X for $60 (slightly lower than the market), Mega Man for $45, Metallic Mega Man X for $80 and even the Figuarts Green Ranger for $80 as well (they sold out of him). They also had Frieza for $65 and Perfect Cell for $75..both lower than the market.
Though the prices were hiked, compared to the prices on eBay and Amazon vendors, their deals were a steal.