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

HO Gauge Bachmann White Pass  Yukon Set
HO Gauge Bachmann White Pass Yukon Set
$289.99
Time Remaining: 6h 55m
Buy It Now for only: $289.99
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: 1d 10h 25m
Buy It Now for only: $89.95
HAWTHORNE VILLAGE COCA COLA CHRISTMAS LOCOMOTIVE  CARS AND SET OF TRACKS
HAWTHORNE VILLAGE COCA COLA CHRISTMAS LOCOMOTIVE CARS AND SET OF TRACKS
$49.99
Time Remaining: 1d 15h 24m
HO SCALE HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET
HO SCALE HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET
$130.00
Time Remaining: 3d 9h 10m
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: 3d 12h 57m
Buy It Now for only: $350.00
TRAIN SET 4 HAWTHORNE VILLAGE SPIRIT OF AMERICA SET OF 4 NEW COLLECTIBLE
TRAIN SET 4 HAWTHORNE VILLAGE SPIRIT OF AMERICA SET OF 4 NEW COLLECTIBLE
$100.00
Time Remaining: 5d 6h 10m
Buy It Now for only: $100.00
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
$142.45
Time Remaining: 6d 9h 53m
Buy It Now for only: $142.45
Narrow Gauge Cumbres  Toltec 6 CD PHOTO SET 1300 JPEGS
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
$29.99
Time Remaining: 7d 10h 36m
Buy It Now for only: $29.99
Bachmann ON30 29804 Dump Car woodside dump car green set of 3
Bachmann ON30 29804 Dump Car woodside dump car green set of 3
$46.98
Time Remaining: 7d 18h 22m
Hawthorne Village Bachmann Spirit Of America Railroad Train set
Hawthorne Village Bachmann Spirit Of America Railroad Train set
$125.00
Time Remaining: 10d 18h 14m
Buy It Now for only: $125.00
ON30 Bachmann Spectrum Jingle Bell Express Train Set 25012 North pole
ON30 Bachmann Spectrum Jingle Bell Express Train Set 25012 North pole
$279.99
Time Remaining: 11d 20h 24m
Buy It Now for only: $279.99
ENHANCED Spectrum On30 CS set
ENHANCED Spectrum On30 CS set
$449.00
Time Remaining: 12d 9h 52m
Buy It Now for only: $449.00
Bachmann ON30 Porter Locomotive with 4 Customized ON30 Gondola Cars 5 Pc Set
Bachmann ON30 Porter Locomotive with 4 Customized ON30 Gondola Cars 5 Pc Set
$149.95
Time Remaining: 13d 10h 25m
Buy It Now for only: $149.95
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
$425.95
Time Remaining: 15d 3h 44m
Buy It Now for only: $425.95
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
$500.00
Time Remaining: 15d 6h 39m
Buy It Now for only: $500.00
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: 22d 7h 39m
Buy It Now for only: $99.99
ENHANCED Bachmann On30 Thomas Kinkade Christmas Express set
ENHANCED Bachmann On30 Thomas Kinkade Christmas Express set
$349.00
Time Remaining: 25d 11h 2m
Buy It Now for only: $349.00
On30 Bachmann Thomas Kinkade Train Set
On30 Bachmann Thomas Kinkade Train Set
$139.95
Time Remaining: 27d 11h 39m
Buy It Now for only: $139.95

Other On30 Scale train items recently purchased through this site:

ENHANCED Spectrum On30 CS set
Logging Camp Cook Bunk House Set Thomas Yorke Scale Model Masterpieces On3 NEW
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
Bachmann ON30 Porter Locomotive with 4 Customized ON30 Gondola Cars 5 Pc Set
Hawthorne Village Bachmann Spirit Of America Railroad Train set
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
ON30 Bachmann Spectrum Jingle Bell Express Train Set 25012 North pole
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
ENHANCED Bachmann On30 Thomas Kinkade Christmas Express set
HO SCALE HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
TRAIN SET 4 HAWTHORNE VILLAGE SPIRIT OF AMERICA SET OF 4 NEW COLLECTIBLE
Bachmann ON30 29804 Dump Car woodside dump car green set of 3
HAWTHORNE VILLAGE COCA COLA CHRISTMAS LOCOMOTIVE CARS AND SET OF TRACKS
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
HO Gauge Bachmann White Pass Yukon Set
On30 Bachmann Thomas Kinkade Train Set