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 model trains'.

Morgan Hill Models MHM On30 O Scale Stone Water Tank w Shed Kit
Morgan Hill Models MHM On30 O Scale Stone Water Tank w Shed Kit
$84.95
Time Remaining: 2d 21h 54m
KMP Models O On30 Scale Craftsman Logging Kit Spar Tree Model Trains New
KMP Models O On30 Scale Craftsman Logging Kit Spar Tree Model Trains New
$56.95
Time Remaining: 3d 9h 59m
Buy It Now for only: $56.95
KMP Models O On30 Scale Craftsman Logging Kit Steam Sawmill with Pla
KMP Models O On30 Scale Craftsman Logging Kit Steam Sawmill with Pla
$179.00
Time Remaining: 3d 9h 59m
Buy It Now for only: $179.00
RIO GRANDE MODELS DRGW WATER CAR 0470
RIO GRANDE MODELS DRGW WATER CAR 0470
$25.00
Time Remaining: 3d 15h 51m
Buy It Now for only: $40.00
West side  Pacific Traction Pacific Fast Mail Balboa Scale Models Fomras
West side Pacific Traction Pacific Fast Mail Balboa Scale Models Fomras
$500.00
Time Remaining: 3d 18h 26m
Buy It Now for only: $700.00
Western Scale Models M16 Blacksmith Shop SEALED Kit O On3 0n30 1 4 Scale
Western Scale Models M16 Blacksmith Shop SEALED Kit O On3 0n30 1 4 Scale
$28.00 (4 Bids)
Time Remaining: 4d 3m
Western Scale Models L 3 Ames Twin Cylinder Steam Engine SEALED Kit O On3 0n30
Western Scale Models L 3 Ames Twin Cylinder Steam Engine SEALED Kit O On3 0n30
$27.00 (5 Bids)
Time Remaining: 4d 6m
Western Scale Models M 51 The Rowe Inclined Shaft Headframe  Hoist House Kit
Western Scale Models M 51 The Rowe Inclined Shaft Headframe Hoist House Kit
$58.49 (10 Bids)
Time Remaining: 4d 15m
Blackstone Models HOn3 RGS C 19 40 DCC Sound
Blackstone Models HOn3 RGS C 19 40 DCC Sound
$255.00 (2 Bids)
Time Remaining: 5d 22h 4m
Hon3 Blackstone Models DRGW High Side Gondola Road Number 9206  Weathered
Hon3 Blackstone Models DRGW High Side Gondola Road Number 9206 Weathered
$54.95
Time Remaining: 5d 22h 18m
Blackstone Models HOn3 DRGW K 27 459 DC no sound
Blackstone Models HOn3 DRGW K 27 459 DC no sound
$200.00
Time Remaining: 5d 22h 20m
CHB Models VB 630 148 O Scale Vertical Boiler Kit On3On30 LoggingMachinery
CHB Models VB 630 148 O Scale Vertical Boiler Kit On3On30 LoggingMachinery
$49.95
Time Remaining: 6d 21h 54m
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
$36.00
Time Remaining: 8d 16h 11m
Buy It Now for only: $36.00
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
$26.00
Time Remaining: 8d 16h 11m
Buy It Now for only: $26.00
Rio Grande Models 3030 DRGW Idler Flat For Derrick OP Kit
Rio Grande Models 3030 DRGW Idler Flat For Derrick OP Kit
$29.95
Time Remaining: 9d 9h 53m
Buy It Now for only: $29.95
RIO GRANDE MODELS DRGW AIR DUMP GONDOLA
RIO GRANDE MODELS DRGW AIR DUMP GONDOLA
$25.00
Time Remaining: 23d 1h 46m
Buy It Now for only: $25.00
Blackstone Models HOn3 East Broad Top 3 Bay Hopper Weathered Rd 951 B340703W
Blackstone Models HOn3 East Broad Top 3 Bay Hopper Weathered Rd 951 B340703W
$59.95
Time Remaining: 24d 9h 51m
Buy It Now for only: $59.95
On3 On30 WISEMAN MODELS SM 102 DRGW OPEN PLATFORM COMBINE PASSENGER CAR
On3 On30 WISEMAN MODELS SM 102 DRGW OPEN PLATFORM COMBINE PASSENGER CAR
$89.95
Time Remaining: 25d 16h 10m
Buy It Now for only: $89.95
HOn3 EAST BOARD TOP 3 BAY HOPPER CAR KIT BY CBT MODELS
HOn3 EAST BOARD TOP 3 BAY HOPPER CAR KIT BY CBT MODELS
$26.55
Time Remaining: 26d 16h 22m
Buy It Now for only: $26.55

Other On30 Scale train items recently purchased through this site:

Western Scale Models L 3 Ames Twin Cylinder Steam Engine SEALED Kit O On3 0n30
Blackstone Models HOn3 East Broad Top 3 Bay Hopper Weathered Rd 951 B340703W
Western Scale Models M16 Blacksmith Shop SEALED Kit O On3 0n30 1 4 Scale
On3 On30 WISEMAN MODELS SM 102 DRGW OPEN PLATFORM COMBINE PASSENGER CAR
Blackstone Models HOn3 RGS C 19 40 DCC Sound
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
Western Scale Models M 51 The Rowe Inclined Shaft Headframe Hoist House Kit
HOn3 EAST BOARD TOP 3 BAY HOPPER CAR KIT BY CBT MODELS
Rio Grande Models 3030 DRGW Idler Flat For Derrick OP Kit
KMP Models O On30 Scale Craftsman Logging Kit Steam Sawmill with Planer New
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
RIO GRANDE MODELS DRGW AIR DUMP GONDOLA
Morgan Hill Models MHM On30 O Scale Stone Water Tank w Shed Kit
CHB Models VB 630 148 O Scale Vertical Boiler Kit On3On30 LoggingMachinery
Blackstone Models HOn3 DRGW K 27 459 DC no sound
West side Pacific Traction Pacific Fast Mail Balboa Scale Models Fomras
RIO GRANDE MODELS DRGW WATER CAR 0470
Hon3 Blackstone Models DRGW High Side Gondola Road Number 9206 Weathered
KMP Models O On30 Scale Craftsman Logging Kit Spar Tree Model Trains New