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

Busch 33573 Tt Gauge Lime Bucket Wagon  Zeitz   New Original Packaging
Busch 33573 Tt Gauge Lime Bucket Wagon Zeitz New Original Packaging
$43.84
Time Remaining: 7h 36m
Buy It Now for only: $43.84
NEVADA CENTRAL Sagebrush Narrow Gauge NEW BOOK
NEVADA CENTRAL Sagebrush Narrow Gauge NEW BOOK
$43.96
Time Remaining: 22h 33m
Buy It Now for only: $43.96
HO Scale HOn3 SS Limited Dinky Creek Bridge Narrow gauge Railroad California
HO Scale HOn3 SS Limited Dinky Creek Bridge Narrow gauge Railroad California
$79.00
Time Remaining: 1d 23h 36m
GR 500 Peco OO9 Gauge Glyn Valley Tramway 4 Wheel Enclosed Side Coach
GR 500 Peco OO9 Gauge Glyn Valley Tramway 4 Wheel Enclosed Side Coach
$31.46
Time Remaining: 2d 14h 13m
Buy It Now for only: $31.46
GR 520 Peco OO9 Gauge Glyn Valley Tramway 4 Wheel Open Side Coach
GR 520 Peco OO9 Gauge Glyn Valley Tramway 4 Wheel Open Side Coach
$31.46
Time Remaining: 2d 14h 13m
Buy It Now for only: $31.46
GR 530 Peco OO9 Gauge Glyn Valley Freelance 4 Wheel Brake Coach Without Buffers
GR 530 Peco OO9 Gauge Glyn Valley Freelance 4 Wheel Brake Coach Without Buffers
$31.46
Time Remaining: 2d 14h 14m
Buy It Now for only: $31.46
Bachmann HOn30 Scale Narrow Gauge Train Open Wagon 77201 Thomas
Bachmann HOn30 Scale Narrow Gauge Train Open Wagon 77201 Thomas
$48.17
Time Remaining: 4d 17h 45m
Buy It Now for only: $48.17
Bachmann HOn30 Scale Narrow Gauge Train Box Van Red 77203 Thomas
Bachmann HOn30 Scale Narrow Gauge Train Box Van Red 77203 Thomas
$48.17
Time Remaining: 4d 17h 45m
Buy It Now for only: $48.17
SCRATCH BUILT WOODEN ON30 GAUGE O SCALE COVERED BRIDGE NARROW GAUGE LAYOUT 58
SCRATCH BUILT WOODEN ON30 GAUGE O SCALE COVERED BRIDGE NARROW GAUGE LAYOUT 58
$55.00
Time Remaining: 5d 21h 11m
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 315 nd
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 315 nd
$64.16
Time Remaining: 8d 9h 7m
Buy It Now for only: $64.16
Busch 31174 Tt Gauge Flat Wagon Samm 4818 New Original Packaging
Busch 31174 Tt Gauge Flat Wagon Samm 4818 New Original Packaging
$48.33
Time Remaining: 10d 16h 11m
Buy It Now for only: $48.33
Busch 31320 Tt Gauge Coal Wagons Fal  New Original Packaging
Busch 31320 Tt Gauge Coal Wagons Fal New Original Packaging
$35.15
Time Remaining: 11d 9h 56m
Buy It Now for only: $35.15
Busch 31321 Tt Gauge Coal Wagons Fal  New Original Packaging
Busch 31321 Tt Gauge Coal Wagons Fal New Original Packaging
$35.15
Time Remaining: 11d 9h 57m
Buy It Now for only: $35.15
Roco 32401 Narrow Gauge H0e Electric Light Railway Soft Left New Boxed
Roco 32401 Narrow Gauge H0e Electric Light Railway Soft Left New Boxed
$33.05
Time Remaining: 11d 10h 6m
Buy It Now for only: $33.05
Noch 58671 Hom Hoe Rhne Viaduct for Narrow Gauge Railway  Nip
Noch 58671 Hom Hoe Rhne Viaduct for Narrow Gauge Railway Nip
$39.41
Time Remaining: 11d 11h 57m
Buy It Now for only: $39.41
Noch 58668 Hom Hoe Bruchstein Viadukt for Narrow Gauge Railway  Nip
Noch 58668 Hom Hoe Bruchstein Viadukt for Narrow Gauge Railway Nip
$52.55
Time Remaining: 11d 11h 57m
Buy It Now for only: $52.55
Shinohara Code 70 Standard Gauge Turnout 6 Left Hand
Shinohara Code 70 Standard Gauge Turnout 6 Left Hand
$34.00
Time Remaining: 11d 18h 18m
Buy It Now for only: $34.00
BINKLEY KIT BUILT HOn3 NARROW GAUGE COLORADO NORTHERN CN ORE WAGON
BINKLEY KIT BUILT HOn3 NARROW GAUGE COLORADO NORTHERN CN ORE WAGON
$128.96
Time Remaining: 13d 4m
Buy It Now for only: $128.96
Busch 31415 Tt Gauge Zweiseiten Kippwagen Fakks 6781  New in Original Package
Busch 31415 Tt Gauge Zweiseiten Kippwagen Fakks 6781 New in Original Package
$41.60
Time Remaining: 14d 2h 59m
Buy It Now for only: $41.60
Busch 31416 Tt Gauge Zweiseiten Kippwagen Fakks 6781  New in Original Packag
Busch 31416 Tt Gauge Zweiseiten Kippwagen Fakks 6781 New in Original Packag
$41.60
Time Remaining: 14d 2h 59m
Buy It Now for only: $41.60
Busch 31323 Tt Gauge Coal Wagons Fals Zz  New in Original Package
Busch 31323 Tt Gauge Coal Wagons Fals Zz New in Original Package
$35.03
Time Remaining: 14d 2h 59m
Buy It Now for only: $35.03

Other On30 Scale train items recently purchased through this site:

Kemtron Brass HOn3 Narrow Gauge Passenger Chair Car Kit 401 DRGW Complete
HO Scale HOn3 SS Limited Dinky Creek Bridge Narrow gauge Railroad California
NEVADA CENTRAL Sagebrush Narrow Gauge NEW BOOK
SCRATCH BUILT WOODEN ON30 GAUGE O SCALE COVERED BRIDGE NARROW GAUGE LAYOUT 58
Shinohara Code 70 Standard Gauge Turnout 6 Left Hand
g Peco Streamline HO OO Gauge Narrow Gauge LH RH Turnout BOXED
Varian 0572 K7360 301 Ionization Gauge
Bachmann HOn30 Scale Narrow Gauge Train Open Wagon 77201 Thomas
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
Kadee 813 ON3 HEIGHT GAUGE
Busch 31416 Tt Gauge Zweiseiten Kippwagen Fakks 6781 New in Original Package
Bachmann HOn30 Scale Narrow Gauge Train Box Van Red 77203 Thomas
Busch 51553 Gauge H0 Ifa G5 59 Tank Truck 1550 Benzintankwagen Minol New
Roco 32401 Narrow Gauge H0e Electric Light Railway Soft Left New Boxed
Busch 31323 Tt Gauge Coal Wagons Fals Zz New in Original Package
Busch 31322 Tt Gauge Coal Wagons Fals Zz New in Original Package
BINKLEY KIT BUILT HOn3 NARROW GAUGE COLORADO NORTHERN CN ORE WAGON
GR 530 Peco OO9 Gauge Glyn Valley Freelance 4 Wheel Brake Coach Without Buffers
Busch 31320 Tt Gauge Coal Wagons Fal New Original Packaging
Busch 31321 Tt Gauge Coal Wagons Fal New Original Packaging
GR 500 Peco OO9 Gauge Glyn Valley Tramway 4 Wheel Enclosed Side Coach
GR 520 Peco OO9 Gauge Glyn Valley Tramway 4 Wheel Open Side Coach
Busch 31174 Tt Gauge Flat Wagon Samm 4818 New Original Packaging
Busch 33573 Tt Gauge Lime Bucket Wagon Zeitz New Original Packaging
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 315 nd