Southern MD: As stated above, figures will depend on where, what kind of mooring, facilities/maint capability of the marina, etc. For us:
Annual slip fee (normal recreational elec, water): ~$83 per foot ($2900 for our 35'')
Winter haul/bottom/zincs/winterize systems/Spring relaunch (layup Dec-Apr, required by insurer): ~$1400
Taxes: Sales tax of ~5, 5.5% (if I recall)
Insurance: $1100.00, based on agreed value of boat.
Tough to say what your maint costs might be...we had a 67 Alberg that we put quite a lot into over several years; obviously a new(er) boat would take less out of your pocket in this arena. Best advice I can offer for buying a used boat is find one that someone has recently upgraded/modernized--they shouldn''t realistically expect to get their investment back, and you can score a very nice boat that you''ll be able to spend more time sailing than working on.
This is a really nice marina, almost all sail, family-owned with an excellent shipyard. You can probably find nice areas for a little less.
Hope this helps--