We've searched the internet and found the largest collection of On30 Scale trains for sale is on eBay. Below are the listings for 'on30 ore car'.

HON3 BUILT ORE CAR
HON3 BUILT ORE CAR
$39.00
Time Remaining: 5d 16h 5m
Buy It Now for only: $50.99
Busch 31319 Tt Ore Car Fal Zz  New Original Packaging
Busch 31319 Tt Ore Car Fal Zz New Original Packaging
$34.76
Time Remaining: 13d 15h 44m
Buy It Now for only: $34.76
Busch 31318 Tt Ore Car Fal Zz  New Original Packaging
Busch 31318 Tt Ore Car Fal Zz New Original Packaging
$34.76
Time Remaining: 13d 15h 44m
Buy It Now for only: $34.76
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 58m
Buy It Now for only: $69.00

Other On30 Scale train items recently purchased through this site:

HON3 BUILT ORE CAR
Busch 31319 Tt Ore Car Fal Zz New Original Packaging
Busch 31318 Tt Ore Car Fal Zz New Original Packaging
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box