Cost.
Now, this is a matter of debate. There's a difference between the cost of raw materials that are strictly part of the boat (that is, they end up on the water) and the cost of building it (strongback, special tools). The first comes to $470, the second to $395. Shipping is included but that only applies to the $77 & $152 orders below. The rest was bought locally. I'm in the Washington DC area where EVERYTHING is more expensive, so that probably factors in too. The only tools involved were paint brushes, and cheap bungee cords & hot knife from Harbor Freight.
$45 plywood
$56 glue, cedar stringers 1x4x8
$42 floor boards & paint
$10 screws for rub strip, Lexel caulk
$13 paint for coaming
$77 tung oil, keepers foot braces, 1 roll of sinew
$152 back band, 14' 11 oz fabric, needles
$38 8 ft 1x6 for strongback
$37 bungee cords for assembly, 6 chip brushes & Harbor Freight hot knife
Total: $470
I had wood for the coaming & rub strips, sandpaper, hardware for strongback assembly, & silcon bronze screws for the coaming so no cost there.
Without tools & strongback -- take off the last 2 lines & it comes out to $395. Can't really build one without a strongback though.
Not included:
cost of the book (plans) -- this should be in there, but I'm too lazy to look it up.
seat
paddle
I could have cut costs by painting it all one color. I used cheap plywood because it was an experiment. I didn't want the expense of shipping BB or driving over to Annapolis for a $130 sheet of marine mahogany ply.
So, it cost more than I expected but it was fun to build anyway. I'd love to do another model if I can ever make it to Alabama for a test paddle first!