I paid $4300.00 for the Nextrail and asking $3800. It is aluminum with all stainless hardware. It was delivered piggyback on top of 3 other trailers, so no miles at all. It has electric brakes. Yes, lot of LED's. I'm sure there are cheaper trailers out there, but Nextrail is a good name.
As far as buying a new model year trailer, I don't think there are any changes from one year to the next. I'll keep it before I give it away.
As far as buying one set up for your specific boat, they all come the same way, you have to make necessary adjustments, unless you have a stepped hull and/or buy from a marina with a lift and they set it up for you.
Pull my trigger, the South Florida trailer is a tandem, all aluminum with hydraulic surge brakes, rated for 7000 lbs. It's a 2002. It was not used for 1 1/2 yrs while boat was being rigged, then just used for stoarage. They used a lift to put the boat in the water. I bought it this yr and put about 500 miles on it. It was $3500.00 new, I'm asking $2000.00.