A couple weeks back, I went to goodwill on a whim and by the purest luck imaginable (purer than Irish luck) I found a lot of classic/vintage Thomas stuff in a bagged lot for $5. Those being...

2004 Brendam Fishing Dock
"The Works" Engine Repair Shop (the Crown Jewel, I got a switch track for it)
Sodor Bay Bridge
4 Misc. Track Pieces
Vintage TOMY Sir Topham Hatt

This is possibly the best thing I will EVER find at Goodwill.