Hope someone can recommend a good broker for you (and one that is not upcharging quite a bit).
Thought it may be useful to list some of the more popular brokers in the tri-state area. Some are more card operators, but also do charter. Might be helpful for others to shine light on their experience with any of the below, add to the list, etc.
Blue Star Jets
Talon Air
Apollo Jets
Skyjet
Nicholas Air
XO Jet
Tradewind - has some good shuttles in the northeast
FlexJet
Sentient Jet
Vista Jet
Magellan