The premium yak trailers can run over a grand; you can get a pretty good one for around $750 and the misers like myself get a utility trailer at HF or NT for under $300 unassembled. Add parts and labor for the budget one and it will still run close to $500, though a lot of people consider their labor to be free (they might feel differently after putting one of the kits together; I know I do). Anyway, my guess is that the sweet spot is in that $750 range. The ones over a grand handle several boats or one Hobie.