l have recently moved to the Lake Michigan shoreline and l have been lusting after sailboats.If l were to buy a 30-35' boat, what could l expect for typical annual maintenance costs?l have found that l can rent a slip seasonally for $2000-3000.What is typical for storage and launching?l have a lot of experience shrink wrapping boats, so l would not be opposed to storing it outside for the winter.Thanks for the help!

Wood boat, glass boat?? In water storage? Trailered? Wood boats cost more to keepmup than glass boats. Find a few you like and talk with other that own one.

Well. l can certainly understand ur lust. lol
You certainly r at Heaven is gate of Boating Wonderland of the North. You should have a boat that size.
Sounds like u have experience being around boats & Marinas, & the water. & that is good. Since u already know what ur Summer-Winter slip & storage is going to be, ur really almost there.
Also sounds like u r capable of doing much of the work on the boat yourself. so that (or course) is good as it is a never ending job - especially if u keep ur vessel in tip top - ship shape.
Boat insurance is really not that much. l always have had mine covered with a rider on my homeowner - & it has always beat the prices from offers l get from Boat US, & miscellaneous companies. l pay almost $500 a year & l minimal (comfort) level coverage on the boat itself, but very high coverage for personal property & injury with hospital & casualty etc..
You did not mention how old a boat, or really what kind (other than sail) so. l can only mention to u that if u get one in really good condition, it is a whole lot less expense to keep it that way - then to get one in ''not of good'' condition & bring it up to spar (pun intended).
Really, u have the bulk of it covered. just get an actual fee schedule from the marina where u plan to keep ur vessel, & that is pretty much going to cover it - course, they charge u to take ur mast down, & to put it up, haul ur vessel out of the water, put it back in the water. What about a cradle? Does the marina let u work on ur boat (some don't, they make u use their mechanics). Do they let u bring a mechanic in? Many do not allow u to do that either.
The only real suggestion l have is that u get a heavy displacement (offshore) vessel. ( l by the way spent 14 years sailing those waters - & it is quite nice to sail with coffee in hand feeling fine, when ur boating friends r sailing along in front of u in their ''same size, but light'' inland lake vessel - & u watch them tossing their cookies of their stern as u can also count the number of times their rudder comes clear out of the water with every crest of a wave.
You will do fine. Welcome aboard!

Happy & Safe boating!
http://boatwrights.org/

Getting a boat threw the maintenance part your safetied with can be very costly> Then to keep it that way depends on the condition of the boat & it equipment>