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

On3 On30 WISEMAN MODEL SERVICES WEST SIDE LUMBER CO WATER TANK KIT V
On3 On30 WISEMAN MODEL SERVICES WEST SIDE LUMBER CO WATER TANK KIT V
$69.95
Time Remaining: 9h 26m
Buy It Now for only: $69.95
O ON30 SILVER CITY MODELS LOGGING STEAM BOILER FUEL TANK KIT
O ON30 SILVER CITY MODELS LOGGING STEAM BOILER FUEL TANK KIT
$39.95
Time Remaining: 15h 13m
Buy It Now for only: $39.95
Logging Camp Portable Bunk House Kits Thomas Yorke Scale Model Masterpieces HOn3
Logging Camp Portable Bunk House Kits Thomas Yorke Scale Model Masterpieces HOn3
$42.25
Time Remaining: 15h 39m
Buy It Now for only: $42.25
On3 On30 WISEMAN MODEL SERVICES COLORADO  SOUTHERN PASSENGER COACH 70 KIT
On3 On30 WISEMAN MODEL SERVICES COLORADO SOUTHERN PASSENGER COACH 70 KIT
$99.95
Time Remaining: 19h 32m
Buy It Now for only: $99.95
Overland Models HO HOn3 brass AH Log Loader w base unpainted NR
Overland Models HO HOn3 brass AH Log Loader w base unpainted NR
$765.00
Time Remaining: 1d 9h 57m
ON30 WISEMAN MODELS WSLC 5 TANK CAR
ON30 WISEMAN MODELS WSLC 5 TANK CAR
$59.99
Time Remaining: 2d 12h 15m
Buy It Now for only: $59.99
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN OUTFIT CAR 01789
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN OUTFIT CAR 01789
$69.95
Time Remaining: 2d 17h 1m
Buy It Now for only: $69.95
Built O On3 Cumbres Depot Structure Kit American Models Laserkit
Built O On3 Cumbres Depot Structure Kit American Models Laserkit
$295.00
Time Remaining: 3d 10h 30m
Buy It Now for only: $295.00
Built O On3 Rio Grande Section House American Models Laserkit
Built O On3 Rio Grande Section House American Models Laserkit
$165.00
Time Remaining: 3d 12h 40m
Buy It Now for only: $165.00
O On3 On30 WISEMAN MODEL SERVICES DOLBEER SINGLE SPOOL DONKEY ENGINE KIT
O On3 On30 WISEMAN MODEL SERVICES DOLBEER SINGLE SPOOL DONKEY ENGINE KIT
$69.95
Time Remaining: 3d 12h 55m
Buy It Now for only: $69.95
O SCALE On3 On30 BANTA MODEL WORKS 6145 Doc Holidays Apothecary
O SCALE On3 On30 BANTA MODEL WORKS 6145 Doc Holidays Apothecary
$94.00
Time Remaining: 3d 13h 47m
Buy It Now for only: $94.00
Backwoods Miniatures On30 Narrow Gauge Turntable Kit Model Railroad Equipment
Backwoods Miniatures On30 Narrow Gauge Turntable Kit Model Railroad Equipment
$49.95
Time Remaining: 3d 16h 44m
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN DRAG FLANGER 01 KIT RGS
On3 On30 WISEMAN MODEL SERVICES RIO GRANDE SOUTHERN DRAG FLANGER 01 KIT RGS
$69.95
Time Remaining: 4d 8h 22m
Buy It Now for only: $69.95
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 9h
Buy It Now for only: $140.95
Logging Camp Cook House Kit Scale Model Masterpieces Yorke Fine HOn3 NEW
Logging Camp Cook House Kit Scale Model Masterpieces Yorke Fine HOn3 NEW
$51.65
Time Remaining: 4d 10h 32m
Buy It Now for only: $51.65
O SCALE On3 On30 BANTA MODEL WORKS 6126 Blacksmith Shop Annex Barn
O SCALE On3 On30 BANTA MODEL WORKS 6126 Blacksmith Shop Annex Barn
$52.00
Time Remaining: 7d 11h 34m
Buy It Now for only: $52.00
O On30 On2 On3 Scale BANTA MODELWORKS 6190 Chillerys Cafe model kit
O On30 On2 On3 Scale BANTA MODELWORKS 6190 Chillerys Cafe model kit
$98.00
Time Remaining: 7d 13h 1m
Buy It Now for only: $98.00
O On3 On30 1 48 WISEMAN MODEL SERVICES STATIONARY HORIZONTAL BOILER KIT
O On3 On30 1 48 WISEMAN MODEL SERVICES STATIONARY HORIZONTAL BOILER KIT
$39.95
Time Remaining: 8d 8h 29m
Buy It Now for only: $39.95
O On3 On30 1 48 WISEMAN MODEL SERVICES WILLAMETTE STRADDLE LUMBER CARRIER KIT
O On3 On30 1 48 WISEMAN MODEL SERVICES WILLAMETTE STRADDLE LUMBER CARRIER KIT
$99.95
Time Remaining: 8d 11h 43m
Buy It Now for only: $99.95
86 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Craftsman Kit HL109S
86 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Craftsman Kit HL109S
$174.95
Time Remaining: 8d 19h 4m
Buy It Now for only: $174.95
O On3 On30 WISEMAN MODEL SERVICES WILLAMETTE MEDIUM 2 DRUM DONKEY ENGINE KIT
O On3 On30 WISEMAN MODEL SERVICES WILLAMETTE MEDIUM 2 DRUM DONKEY ENGINE KIT
$99.95
Time Remaining: 10d 7h 37m
Buy It Now for only: $99.95

Other On30 Scale train items recently purchased through this site:

RIO GRANDE MODELS DRGW WATER CAR 0470
Overland Models HO HOn3 brass AH Log Loader w base unpainted NR
BLACKSMITH SHOP WITH DETAILS HO HON30 HON3 KIT 4010 SEQUOIA MODELS
RIO GRANDE MODELS DRGW FLANGER
RIO GRANDE MODELS DRGW AIR DUMP GONDOLA
ON30 WISEMAN MODELS WSLC 5 TANK CAR
HOn3 DRGW 30FT REFRIDGERATOR CAR KIT BY TIMBER CREEK MODELS
SMOB HO Sawmill Outbuilding Kits 4 HO HOn3 by KMP Models ON SALE ONLY 2 LEFT
O ON30 SILVER CITY MODELS LOGGING STEAM BOILER FUEL TANK KIT
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
Built O On3 Rio Grande Section House American Models Laserkit
F G scale BANTA MODEL WORKS 8131 BO Hotel
O On3 On30 1 48 SCALE WISEMAN MODEL SERVICES JI CASE STEAM TRACTION ENGINE KIT
On30 WISEMAN MODEL SERVICES VT SHOPS AHM HEISLER CONVERSION KIT
On30 DONKEY ENGINE model BUILT UP and Finished for you O Scale
G scale BANTA MODEL WORKS 8065 Crossing Shanty
HO HOn3 WISEMAN MODEL SERVICES REA 15 HORSESHOE MEADOW DEPOT KIT FSM
F G scale BANTA MODEL WORKS 8108 Donkey Corners Depot
F G 1203 BANTA MODEL WORKS 8135 Branchline Water Tank
F G scale BANTA MODEL WORKS 8144 Lineside Tool Shed
On3 On30 WISEMAN MODEL SERVICES WEST SIDE LUMBER CO WATER TANK KIT V
F G scale BANTA MODEL WORKS 8111 Roubies Saloon
Logging Camp Portable Bunk House Kits Thomas Yorke Scale Model Masterpieces HOn3
On3 On30 WISEMAN RIO GRANDE SOUTHERN MODEL T FORD INSPECTION CAR 1 KIT SSLTD