I would imagine the price of a new boat P18 in in 83 was about 3500 for the boat... the Trailer about 6 to 8 hundred for a galvanized trailer. back in the day. (based on what I paid for an 18 footer in 1987.

2500 without a sailbox (hard to find a solid one) seems very steep They certainly go their money's worth. 1000 to 1500 is much more reasonable.

But the availability of solid boats of that era is decreasing. Hobie 16's of that era should be going for about 500...

Sometimes... the parts value of the boat is worth more then the boat... BUT... they have to be able to sell the parts as well.

The rec sailors I know who traded up from a P16 to a P18 were not as happy because they sailed mostly solo and the P18 was not rightable and tougher to move on the beach. He traded back down to a P16 a year or two later.

good luck