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

Busch 33573 Tt Gauge Lime Bucket Wagon  Zeitz   New Original Packaging
Busch 33573 Tt Gauge Lime Bucket Wagon Zeitz New Original Packaging
$44.53
Time Remaining: 38m
Buy It Now for only: $44.53
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I  II  III
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
$150.00
Time Remaining: 2d 8h 35m
Buy It Now for only: $150.00
Bachmann HOn30 Scale Narrow Gauge Train Open Wagon 77201 Thomas
Bachmann HOn30 Scale Narrow Gauge Train Open Wagon 77201 Thomas
$48.17
Time Remaining: 2d 10h 47m
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: 2d 10h 47m
Buy It Now for only: $48.17
Model railroad 1203 scale Narrow gauge LS Caboose DRGW detailed interior
Model railroad 1203 scale Narrow gauge LS Caboose DRGW detailed interior
$200.00
Time Remaining: 2d 15h 40m
Buy It Now for only: $260.00
Noch 58671 HOM Hoe Rhne Viaduct for Narrow Gauge Railway  NIP
Noch 58671 HOM Hoe Rhne Viaduct for Narrow Gauge Railway NIP
$40.58
Time Remaining: 4d 4h 59m
Buy It Now for only: $40.58
Noch 58668 HOM Hoe bruchstein viadukt for Narrow Gauge Railway  NIP
Noch 58668 HOM Hoe bruchstein viadukt for Narrow Gauge Railway NIP
$54.11
Time Remaining: 4d 4h 59m
Buy It Now for only: $54.11
Simpson On3 Narrow Gauge Train Railroad Parts Assortment
Simpson On3 Narrow Gauge Train Railroad Parts Assortment
$89.99
Time Remaining: 4d 23h 47m
Buy It Now for only: $89.99
Narrow Gauge Cumbres  Toltec 6 CD PHOTO SET 1300 JPEGS
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
$29.99
Time Remaining: 5d 8h 22m
Buy It Now for only: $29.99
ULRICH O SCALE 1 48 On3 On30 FORD CAB  CHASSIS NARROW GAUGE ALL METAL
ULRICH O SCALE 1 48 On3 On30 FORD CAB CHASSIS NARROW GAUGE ALL METAL
$49.99
Time Remaining: 5d 12h 10m
Buy It Now for only: $49.99
ULRICH O SCALE 1 48 On3 On30 FORD CAB  LOGGING TRAILER NARROW GAUGE ALL METAL
ULRICH O SCALE 1 48 On3 On30 FORD CAB LOGGING TRAILER NARROW GAUGE ALL METAL
$69.99
Time Remaining: 5d 13h 35m
Buy It Now for only: $69.99
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
$260.00
Time Remaining: 6d 7h 48m
Buy It Now for only: $260.00
ULRICH O SCALE 1 48 On3 On30 FORD TANDEM CAB  CHASSIS NARROW GAUGE ALL METAL
ULRICH O SCALE 1 48 On3 On30 FORD TANDEM CAB CHASSIS NARROW GAUGE ALL METAL
$52.99
Time Remaining: 6d 10h 29m
Buy It Now for only: $52.99
BINKLEY KIT BUILT HOn3 NARROW GAUGE COLORADO NORTHERN CN ORE WAGON
BINKLEY KIT BUILT HOn3 NARROW GAUGE COLORADO NORTHERN CN ORE WAGON
$138.46
Time Remaining: 6d 17h 5m
Buy It Now for only: $138.46
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
$68.88
Time Remaining: 8d 2h 9m
Buy It Now for only: $68.88
Howell Day Red Ball Kit 162 Rotary Snow Plow HOn3 Narrow Gauge Built
Howell Day Red Ball Kit 162 Rotary Snow Plow HOn3 Narrow Gauge Built
$55.00
Time Remaining: 11d 8h 54m
Buy It Now for only: $55.00
AY69 05 10 x Utz Fama Roco AlpinLine Gauge 0 m DC 90 5118 5113 Track MINT
AY69 05 10 x Utz Fama Roco AlpinLine Gauge 0 m DC 90 5118 5113 Track MINT
$30.42
Time Remaining: 11d 18h 51m
Buy It Now for only: $30.42
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
$68.88
Time Remaining: 12d 1h 2m
Buy It Now for only: $68.88
g Peco Streamline HO OO Gauge Narrow Gauge LH RH Turnout BOXED
g Peco Streamline HO OO Gauge Narrow Gauge LH RH Turnout BOXED
$35.00
Time Remaining: 12d 12h 59m
Buy It Now for only: $35.00
g Peco Streamline O 165 Oe Narrow Gauge Medium Radius Left Right Turnout
g Peco Streamline O 165 Oe Narrow Gauge Medium Radius Left Right Turnout
$40.00
Time Remaining: 12d 13h 1m
Buy It Now for only: $40.00
AY72 05 8x Utz Fama Roco AlpinLine Gauge 0 m DC 90 5117 Compensation pieceW
AY72 05 8x Utz Fama Roco AlpinLine Gauge 0 m DC 90 5117 Compensation pieceW
$25.35
Time Remaining: 12d 13h 14m
Buy It Now for only: $25.35

Other On30 Scale train items recently purchased through this site:

NEVADA CENTRAL Sagebrush Narrow Gauge NEW BOOK
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
Howell Day Red Ball Kit 162 Rotary Snow Plow HOn3 Narrow Gauge Built
Peco SL E696 Streamline LH Left Hand Turnout Switch SM 32 Narrow Gauge Scale
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
On30 Model Railroad Hotel Built Finished Lighted Narrow Gauge Model Railroad Bld
g Peco Streamline HO OO Gauge Narrow Gauge LH RH Turnout BOXED
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
O On30 Narrow Gauge Passenger Depot Ellicott City Style BUILT Millwork Included
Model railroad 1203 scale Narrow gauge LS Caboose DRGW detailed interior
g Peco Streamline O 165 Oe Narrow Gauge Medium Radius Left Right Turnout
HO Scale standard Narrow Gauge MODEL FORD INSPECTION CAR K129B KIT SSLTD
Bachmann HOn30 Scale Narrow Gauge Train Box Van Red 77203 Thomas
HON3 KADEE COUPLERS 714 6 PACKS ASSEMBLYFIXTUREHEIGHT GAUGE SPRINGS NEW
Bachmann HOn30 Scale Narrow Gauge Train Open Wagon 77201 Thomas
On30 Model Railroad Building Built Painted On30 Narrow Gauge Blacksmith Shop
Turnout Medium Radius Peco On30 O 165 gauge SL E597
Electrofrog Medium Radius Right Hand Point Peco On30 O 165 gauge SL E595
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
BINKLEY KIT BUILT HOn3 NARROW GAUGE COLORADO NORTHERN CN ORE WAGON
Noch 58671 HOM Hoe Rhne Viaduct for Narrow Gauge Railway NIP
BINKLEY KIT BUILT HOn3 NARROW GAUGE DENVER RIO GRANDE DRGW BOX CAR WAGON 3145 n
AY72 05 8x Utz Fama Roco AlpinLine Gauge 0 m DC 90 5117 Compensation pieceW
Roco H0e 32411 Narrow Gauge Switch Right 15 with Metallherzstck New + Ovp