VI Airlink: $7k, round trip, Beech 1900C (can seat 19 pax).
We need a minimum of 12 seats for my boat (Voyage 600), but we have another boat (Voyage 520) sailing with us that could join in to reduce/share costs.
Cape Air: Current listed schedule has it at $700pp/rt, which is asinine. <img src="http://www.traveltalkonline.com/forums/images/graemlins/cloud.gif" alt="" />

Thank you all for your input thus far. It's given us some good ideas. It looks like we may go with a flight hack, using a scheduled flight on the way over to EIS, and a private charter on the way back.<img src="http://www.traveltalkonline.com/forums/images/graemlins/Cheers.gif" alt="" />