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

On30 ANNUAL 2017 Out of Print NEW BOOK available ONLY here 2017 On30 Annual
On30 ANNUAL 2017 Out of Print NEW BOOK available ONLY here 2017 On30 Annual
$29.95
Time Remaining: 4h 37m
Buy It Now for only: $29.95
On3 On30 O CRAFTSMAN NATIONAL MOTOR Co 1912 MODEL T COKE REA EXPRESS TRUCK KIT
On3 On30 O CRAFTSMAN NATIONAL MOTOR Co 1912 MODEL T COKE REA EXPRESS TRUCK KIT
$34.95
Time Remaining: 5h 39m
Buy It Now for only: $34.95
Hawthorne Village Set Of 3 Trains
Hawthorne Village Set Of 3 Trains
$83.00
Time Remaining: 6h 12m
Buy It Now for only: $200.00
HON3 BUILT ORE CAR
HON3 BUILT ORE CAR
$34.99
Time Remaining: 6h 26m
Buy It Now for only: $49.00
RS MICROLUX TOOLS SET SWORD SAWJIGSAW FILING MACHING  POWER SUPPLY ON BASE
RS MICROLUX TOOLS SET SWORD SAWJIGSAW FILING MACHING POWER SUPPLY ON BASE
$99.95
Time Remaining: 7h 40m
O SCALE On3 On30 GRANDT LINE 3046 CHAMA COALING TOWER CHUTE DETAILING KIT 2
O SCALE On3 On30 GRANDT LINE 3046 CHAMA COALING TOWER CHUTE DETAILING KIT 2
$34.95 (1 Bid)
Time Remaining: 7h 40m
F G scale BANTA MODEL WORKS 8108 Donkey Corners Depot
F G scale BANTA MODEL WORKS 8108 Donkey Corners Depot
$185.00
Time Remaining: 7h 46m
Buy It Now for only: $185.00
Micro Engineering 14 403 On30 5 CODE 83 LH TURNOUT BIGDISCOUNTTRAINS
Micro Engineering 14 403 On30 5 CODE 83 LH TURNOUT BIGDISCOUNTTRAINS
$28.45
Time Remaining: 7h 59m
Buy It Now for only: $28.45
Hawthorne Village On30 Budweiser Holiday Express Train with track and powerpack
Hawthorne Village On30 Budweiser Holiday Express Train with track and powerpack
$99.95
Time Remaining: 8h 31m
F G scale BANTA MODEL WORKS 8144 Lineside Tool Shed
F G scale BANTA MODEL WORKS 8144 Lineside Tool Shed
$82.00
Time Remaining: 8h 40m
Buy It Now for only: $82.00
F G scale BANTA MODEL WORKS 8122 Sonnys Used Cars
F G scale BANTA MODEL WORKS 8122 Sonnys Used Cars
$95.00
Time Remaining: 8h 52m
Buy It Now for only: $95.00
Busch HOf 12342 Weiche rechts NEU in OVP
Busch HOf 12342 Weiche rechts NEU in OVP
$33.19
Time Remaining: 14h 12m
Buy It Now for only: $33.19
Busch HOf 12341 Weiche links NEU in OVP
Busch HOf 12341 Weiche links NEU in OVP
$33.19
Time Remaining: 14h 16m
Buy It Now for only: $33.19
Bachmann 26002 On30 Excursion Car Red with Tan Roof
Bachmann 26002 On30 Excursion Car Red with Tan Roof
$40.79
Time Remaining: 16h 18m
Buy It Now for only: $40.79
Roco H0e 32401 Schmalspurgleis Feldbahnweiche links 24 elektrisch NEU + OVP
Roco H0e 32401 Schmalspurgleis Feldbahnweiche links 24 elektrisch NEU + OVP
$29.32
Time Remaining: 18h 10m
Buy It Now for only: $29.32
Roco H0e 32403 Schmalspurgleis Feldbahnweiche rechts 24 elektrisch NEU + OVP
Roco H0e 32403 Schmalspurgleis Feldbahnweiche rechts 24 elektrisch NEU + OVP
$29.32
Time Remaining: 18h 14m
Buy It Now for only: $29.32
First 21 Years of the Gazette Professionly Bound 126 Issues at 238 per issue
First 21 Years of the Gazette Professionly Bound 126 Issues at 238 per issue
$300.00
Time Remaining: 20h 2m
BLACKSTONE MODELS HOn3 B370111 Road Pilot Assembly for Blackstone K 27
BLACKSTONE MODELS HOn3 B370111 Road Pilot Assembly for Blackstone K 27
$26.99
Time Remaining: 20h 24m
Buy It Now for only: $26.99
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks
Lot of 2 BLACKSTONE HOn3 B370110 DRGW UTLX 48 Bettendorf Tank Car Trucks
$33.99
Time Remaining: 20h 56m
Buy It Now for only: $33.99
Roco H0e 32200 S Schmalspurflexgleis Lnge 730 mm 12 Stck NEU + OVP
Roco H0e 32200 S Schmalspurflexgleis Lnge 730 mm 12 Stck NEU + OVP
$81.00
Time Remaining: 21h 50m
Buy It Now for only: $81.00
Roco H0e 32201 S Feldbahnflexgleis Lnge 730 mm 12 Stck NEU + OVP
Roco H0e 32201 S Feldbahnflexgleis Lnge 730 mm 12 Stck NEU + OVP
$81.00
Time Remaining: 22h 8m
Buy It Now for only: $81.00

Other On30 Scale train items recently purchased through this site:

On30 Narrow Gauge Handmade Steam Boilers Rapairs Structure
1 lot of vintage misc spring trucks and wheels HOn3 scale
A Plan For VIctory Box Car Bachman E Z Track Train Crossing HO Narrow Gauge NEW
Narrow Gauge Classic DRGW 1 4 Scale 2 Stall Engine House San Juan Engineering
NEVADA CENTRAL Sagebrush Narrow Gauge NEW BOOK
Narrow Gauge LOMBARD Log Hauler Finished Model HOn3 HO Scale Craftsman model
New Sealed AHM Minikits Narrow Gauge Engine Shed Kit 5809 HO Scale
SCRATCH BUILT WOODEN ON30 GAUGE O SCALE COVERED BRIDGE NARROW GAUGE LAYOUT 58
HON3 BUILT ORE CAR
The EUREKA PALISADE Biggest Little Railroad in the World NEW B
Spectrum On30 2 6 6 2 steam engine in original box item 28798
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
Hawthorne Village Set Of 3 Trains
Durango Press 59 HO Denver Rio Grande Western Water Tower HOn3 Kit
bachmann spectrum 28904
On30 O or On3 SCALE 148 SCRATCH BUILT RUSTIC STEAM ERA TRACKSIDE WATER TANK
ON3 ON30 SCALE WATER TANK ON STUMP CUSTOM BUILT AND FINISHED MODEL
Bachmann 29203 On30 Painted Unlettered Whitcomb 50 Ton Center Cab w DCC
On30 WISEMAN MODEL SERVICES 1890s GILPIN STYLE BACHMANN SHAY CONVERSION KIT
On3 Durango Press Dp 77 DRGW Derrick Car Kit
HO HON3 SCALE WATER TANK ON STUMP RESIN KIT LOGGING SHORT LINE
ON3 ON30 SILVER CITY MODELS KILGORE MOW SUPPLY CAR KIT LOGGING
Bachmann Spectrum 0n30 Passenger cars
On30 O Scale DCC Sound Custom Galloping Goose
Hit and Miss Gasoline Logging Engine on Skidder custom weathered lot 4