The seller is listing it for a friend, so he probably just did what the owner/friend told him to do.
It is pretty much a waste of time, however.
Abandoned projects bring about a dime on every dollar spent. There are not as many buyers interested in a project as there are for completed cars. Potential buyers are keenly aware there are probably missing parts, work not done to their standards, etc. This is especially true of cars that are expensive to restore like E9s.
The best use of eBay would have been to have a far more detailed description and LOTS of pictures (even if you have to link to some in an on line photo album). Start with a low bid requirement ($500), but set a realistic reserve after researching the market. That way, if it doesn't reach reserve and sell, you at least will now know how the market values the car. You get more "eyes" worldwide on an eBay listing than any other venue I can think of. Forums like this one will be publicizing your listing for you. Anyone even vaguely interested in an E9 will likely see your listing.