need 3rd row seat for V70

i just bought a 2006 V70 and would like to try to install the 3rd row
seat as cheaply as possible. the only problem is that the dealers want
at least $1700 to install the seat (that includes parts and labor).
i've been trying to figure a workaround and the options seem to be:

1) go to a salvage yard and yank the seat out of a wrecked V70 and have
the volvo guy down the block install it. he only wants $240 for labor
and seems to have done a bunch of these before. the problem with this
is that he said that it would be a big help to have the instructions
that come with the new part to help do the install.

2) buy the part from the dealer and have my local guy install it. the
problem is that the damn part from the dealer costs $1350.

3) lump it and have the dealer do the work.

so, does anyone know where i can buy a 3rd row seat for less than
$1350? or does anyone have any suggestions that i might not have
thought of?

thanks,
jim