We've searched the internet and found the largest collection of On30 Scale trains for sale is on eBay. Below are the listings for 'Wood Side Dump Car'.

On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
$69.00
Time Remaining: 16d 18h 15m
Buy It Now for only: $69.00
Bachmann On30 Scale Train Logging  Minning Wood Side Dump Car Green 3 Box 29804
Bachmann On30 Scale Train Logging Minning Wood Side Dump Car Green 3 Box 29804
$69.44
Time Remaining: 18d 15h 13m
Buy It Now for only: $69.44

Other On30 Scale train items recently purchased through this site:

On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
Bachmann On30 Scale Train Logging Minning Wood Side Dump Car Green 3 Box 29804