Lawyers may get 20%, but you could lose 100%.
Dealer that sold it to you may be a nice guy, but if he had any honor, he would
refund your money, and let you drop that big hunk of iron on his front porch.
Your dealer is 100% responsible for your loses. Its up to him to refund you, then
he can go after the bum who sold it to him.
Without a lawyer, this could drag on for years. It will not cost you much just to have an attorney
write one letter, which may scare the crap out of them.