There often are a lot of used trailers available as many people put the boat
in a sling or dock it, and then don't need to move it again. ,Or they need
to junk the boat, but the trailer is OK. Bid very low on Ebay if you see
what you want.

Some people just want to get the thing out of the back yard. Go to every
local boatyard and boat store and ask around. Put ads on local
fishing/boating internet sites. You will find a good used one for half the
cost of a new one. You may, however, have to replace tires; axles etc. but
they are often still a good buy. RG