Perhaps $200 for the lot, based on the parts of the non-functional machine. There are a few fixes for the Graphics chip that comes undone from the logic board - and that would add to the value of the system.
As parts, only the 512Mb SDRAM is reusable, the 128 MB is on the logic board. Of course, you may get a bit more as there would be fewer systems on the coast. Of course, the 10.4 disks are not original to the machine, so would be of lesser value for the purists...