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

Bachmann On30 Scale Train Tank Car Tank Car DS Fire Suppression 27122
Bachmann On30 Scale Train Tank Car Tank Car DS Fire Suppression 27122
$45.16
Time Remaining: 2d 10h 45m
Buy It Now for only: $45.16
Bachmann On30 Scale Train Tank Car Tank Car Standard Oil 27131
Bachmann On30 Scale Train Tank Car Tank Car Standard Oil 27131
$45.16
Time Remaining: 2d 10h 47m
Buy It Now for only: $45.16
On3 On30 WISEMAN MODEL SERVICES WEST SIDE LUMBER CO OIL TANK CAR 5 KIT
On3 On30 WISEMAN MODEL SERVICES WEST SIDE LUMBER CO OIL TANK CAR 5 KIT
$89.95
Time Remaining: 21d 12h 59m
Buy It Now for only: $89.95
Lot of 2 BLACKSTONE HOn3 B370109 DRGW UTLX 48 Arch Bar Tank Car Trucks
Lot of 2 BLACKSTONE HOn3 B370109 DRGW UTLX 48 Arch Bar Tank Car Trucks
$34.99
Time Remaining: 29d 4h 50m
Buy It Now for only: $34.99
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks
$34.99
Time Remaining: 29d 4h 54m
Buy It Now for only: $34.99

Other On30 Scale train items recently purchased through this site:

Lot of 2 BLACKSTONE HOn3 B370109 DRGW UTLX 48 Arch Bar Tank Car Trucks
Bachmann On30 Scale Train Tank Car Tank Car DS Fire Suppression 27122
On3 On30 WISEMAN MODEL SERVICES WEST SIDE LUMBER CO OIL TANK CAR 5 KIT
Bachmann On30 Scale Train Tank Car Tank Car Standard Oil 27131
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks