my thoughts are.
all's fair in love, war, and e-bay.

i wouldn't post a link to something i know someone from this forum is looking for, send an instant message to them in private. this way you won't spoil it.
if you get in a bidding war with someone from here, assess how bad you need the part and take it from there.
and finally if you have something to sell,. list it here first for a few days, then it's off to e-bay