After about 16 months of collecting/acquiring stock, I finally began my first foray into selling. I listed all of these items last weekend.
eBay:
Raptor Escape - $118.5 (I bought 3 from a guy in a Wal-Mart parking lot for $120 about a year ago)
Wookie Gunship - $70 (buy-in was $40 from Target clearance)
Series 1 Microfighters X-Wing + TIE - $40 (buy in was $20)
Rhino and Sandman Supervillain Team-up - $39.50 (buy in was $19 from Wal-Mart clearance)
Loose Minifigures:
Jek-14 - $20
Ithorian Jedi Master - $15
Wolfpack Clone Troopers (x2) - $20
AT-DP Drivers (x2) - $8
Kallus - $10
All in all, I'm pretty satisfied with the return. I never intended this to be a major source of revenue, but these sales at least somewhat offset the cost of my habit. I'm sure I could have held on longer for higher returns, but I've run out of storage space and my (live-in) girlfriend is constantly reminding me of this fact.