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

HO SCALE HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET
HO SCALE HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET
$130.00
Time Remaining: 1d 8h 15m
Buy It Now for only: $130.00
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
$350.00
Time Remaining: 1d 12h 2m
Buy It Now for only: $350.00
Logging Camp Cook Bunk House Set Thomas Yorke Scale Model Masterpieces On3 NEW
Logging Camp Cook Bunk House Set Thomas Yorke Scale Model Masterpieces On3 NEW
$140.95
Time Remaining: 4d 8h 58m
Buy It Now for only: $140.95
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
$99.99
Time Remaining: 20d 6h 44m
Buy It Now for only: $99.99
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
$89.95
Time Remaining: 29d 9h 30m
Buy It Now for only: $89.95

Other On30 Scale train items recently purchased through this site:

2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
Logging Camp Cook Bunk House Set Thomas Yorke Scale Model Masterpieces On3 NEW
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
HO SCALE HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET