I'm liquidating my father's photographic equipment, since he's no longer able to use it. He has some Graflex pieces (lenses, a Photorecord bellows, a flim-roll back,etc) and a Mamiya-Sekor lens. I'm wondering if e-bay is the best place to sell them, or if there's another spot where these items will get better exposure to Graflex fans.

eBay offers the greatest exposure to potential purchasers. Recently, a forum member here has also created a site for this purpose:

http://southbristolviews.com/graflexchange/index.php

Please use the Graflexchange site mentioned. The parts will go to someone who cares about preserving and using them. It may take longer to sell them but you won't have to put up with deadbeat bidders.