OK, here's an example:
Per their rate sheet available online, outside winter storage for 2009 at Boothbay Region Boatyard was $6/square foot for the season, which includes haul, wash, block and launch, but not unstepping the mast
or covering the boat. My boat is 34 feet long and 11.25 feet in beam, or 382.5 square feet, which works out to $2295 for a winter's storage. Perhaps not the cheapest place around, but it is somewhat representative of the going rate around here.
Again, according to their online ratesheet, Marblehead Trading, the place I used, charges 4.25 per running foot for haulout (34' = $144.5), Rigging
work at $65/hour (unstep and store mast
, ~4 man hours? $260), Trucking at $120 hour (round trip = 6 hours, $720) -- repeat in spring to launch, total is $2250. Add mast storage ($150) and pressure wash at haulout ($150) -- basically it works out to be about the same as a winter's storage at a boat yard, marginally more, but now I've got my boat at home and don't have to drive 8 hours round trip each time I want to work on it!
Of course, Marblehead Trading is very efficient at this process, and they are using their own truck and trailer based right there at their yard, so you don't have to pay to have a trucker come from far away just to get to your haulout yard, and then pay for their trip back home again.
Typical winter storage season up here is about 7 to 8 months long. At your $175/month, that's about $1400 -- but does your rate include haulout and launch?
In the OP's case, he's looking to store the boat for 3 years. At your yard, 36 months X $175 per = $6300 -- So, yes, I think you can probably have the boat trucked home, and then back to water
again, for less than $6300!