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

HO HOn3 LAMBERT SHINOHARA CODE 70 6 LEFT HAND TURNOUT SWITCH TRACK II I
HO HOn3 LAMBERT SHINOHARA CODE 70 6 LEFT HAND TURNOUT SWITCH TRACK II I
$38.00 (7 Bids)
Time Remaining: 1h 30m
ON3 CONVERSION FROM BACHMANN 2 6 0 BRASS TRUCKS NARROW GAUGE CS
ON3 CONVERSION FROM BACHMANN 2 6 0 BRASS TRUCKS NARROW GAUGE CS
$119.00
Time Remaining: 1h 56m
Buy It Now for only: $155.00
FROM an UGLY DUCKLING to a GORGEOUS SWAN
FROM an UGLY DUCKLING to a GORGEOUS SWAN
$49.99
Time Remaining: 2h 57m
Buy It Now for only: $49.99
KEMTRON HON3 K 2003 PASS BAGGAGE COMBINE 212 RARE KIT UNTOUCHED
KEMTRON HON3 K 2003 PASS BAGGAGE COMBINE 212 RARE KIT UNTOUCHED
$44.95 (1 Bid)
Time Remaining: 3h 32m
BACHMANN SPECTRUM NO 44 6681 MAGNUM TRANSFORMER
BACHMANN SPECTRUM NO 44 6681 MAGNUM TRANSFORMER
$29.99
Time Remaining: 4h 35m
Buy It Now for only: $29.99
Sn3 Berlyn Locomotive Works CS RGS Bettendorf Trucks W Brakes 5 PACKAGES
Sn3 Berlyn Locomotive Works CS RGS Bettendorf Trucks W Brakes 5 PACKAGES
$34.99 (1 Bid)
Time Remaining: 5h 37m
RS O On3 On30 KEIL LINE MODELS 48 125 INDUSTRIAL STIFF LEG DERRICK CRAFTSMAN KIT
RS O On3 On30 KEIL LINE MODELS 48 125 INDUSTRIAL STIFF LEG DERRICK CRAFTSMAN KIT
$103.50 (14 Bids)
Time Remaining: 6h 42m
Bachmann ON 30 item 27391 logging  mining cars skeleton log cars set of 3
Bachmann ON 30 item 27391 logging mining cars skeleton log cars set of 3
$86.00 (4 Bids)
Time Remaining: 7h 16m
RS O On3 On30 SEQUOIA SCALE MODELS BRANCHLINE SAND HOUSE AND BUCKET CRANE KIT
RS O On3 On30 SEQUOIA SCALE MODELS BRANCHLINE SAND HOUSE AND BUCKET CRANE KIT
$32.00 (3 Bids)
Time Remaining: 7h 44m
O SCALE On3 On30 BANTA MODEL WORKS 6153 Oakboro Hay  Grain
O SCALE On3 On30 BANTA MODEL WORKS 6153 Oakboro Hay Grain
$132.00
Time Remaining: 7h 55m
Buy It Now for only: $132.00
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: 8h 4m
Suncoast Models 004 148 O Scale Logging Camp Craftsman Kit On3On30
Suncoast Models 004 148 O Scale Logging Camp Craftsman Kit On3On30
$56.00 (8 Bids)
Time Remaining: 8h 4m
CHB Models VB 630 148 O Scale Vertical Boiler Kit On3On30 LoggingMachinery
CHB Models VB 630 148 O Scale Vertical Boiler Kit On3On30 LoggingMachinery
$54.95
Time Remaining: 8h 4m
Sierra West 302 148 O Scale Tool Shed Craftsman Kit On3On30
Sierra West 302 148 O Scale Tool Shed Craftsman Kit On3On30
$182.50 (5 Bids)
Time Remaining: 8h 4m
Wheel Works WW 110 148 O Scale On3 Rail Truck Kit OOP
Wheel Works WW 110 148 O Scale On3 Rail Truck Kit OOP
$29.95
Time Remaining: 8h 4m
KMP Models O Scale Steam Powered Sawmill w Planer LumberLogging Interior MIB
KMP Models O Scale Steam Powered Sawmill w Planer LumberLogging Interior MIB
$129.95
Time Remaining: 8h 14m
O On30 Bulldozer Logging Diorama custom weathered after historic pictures
O On30 Bulldozer Logging Diorama custom weathered after historic pictures
$128.00
Time Remaining: 9h 8m
On30 Logging Steam Donkey custom weathered metal wheels lot 2
On30 Logging Steam Donkey custom weathered metal wheels lot 2
$165.00
Time Remaining: 9h 8m
Old Ford Logging Truck custom weathered lot 4  O SCALE  ON30
Old Ford Logging Truck custom weathered lot 4 O SCALE ON30
$118.00
Time Remaining: 9h 8m
Boulder Valley Models 302 Enclosed Cab Dunkirk Geared Steam Locomotive
Boulder Valley Models 302 Enclosed Cab Dunkirk Geared Steam Locomotive
$39.99
Time Remaining: 9h 13m
RS O On3 On30 COLORADO SCALE MODELS 475 LEAVERITE MINE CRAFTSMAN KIT
RS O On3 On30 COLORADO SCALE MODELS 475 LEAVERITE MINE CRAFTSMAN KIT
$93.47 (5 Bids)
Time Remaining: 9h 31m

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HOn3 BRASS DITCHER
Micro Engineering On30 Code 83 Flex Trak 36 6 Pcs 10 138 Non Weathered
On30 O General Store Kit by Blair Line FREE US SHIPPING
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Bachmann Train DCC Tsunami Plug Play Sound Module for Heisler On30 Loco 44953
BCH Minitrains 11 pc Plymouth Freight set HOn2 1 2
HOn3 BLACKSMITH WORK CAR
On30 O Company House Kit by Blair Line FREE US SHIPPING
Boulder Valley Models 302 Enclosed Cab Dunkirk Geared Steam Locomotive
HOn3 United DRGW Narrow Gauge Passenger Cars Brass Imports Rio Grande 5 cars
Bachmann Hawthorne Village Coca Cola Passenger Car Holiday Express Train
RS O On3 On30 ROGERS LOCOMOTIVE SHOP 84 KNEE BRACED WOOD TRESTLE KIT RARE
Suncoast Models 004 148 O Scale Logging Camp Craftsman Kit On3On30
HAWTHORNE VILLAGE COCA COLA CHRISTMAS LOCOMOTIVE TENDER TRAIN On3 RUNS ON HO
Bachmann On30 Scale Train Whitcomb 50 Ton Yellow Black Stripes 29203
RS O On3 On30 DON WINTER 159 DINKY CREEK BRIDGE CRAFTSMAN STRYCTURE KIT
RS O On3 On30 THOMAS A YORKE O 144 CHINESE LAUNDRY CRAFTSMAN STRUCTURE KIT
RS O On3 On30 COLORADO SCALE MODELS 475 LEAVERITE MINE CRAFTSMAN KIT
RS O On3 On30 ARKANSAS VALLEY MODELS ROGERS PLUMBING HEATING STRUCTURE KIT
RS O On3 On30 THE STRUCTURE COMPANY 2001 MINERS CABIN STRUCTURE KIT
RS On3 On30 SAN JUAN ENGINEERING DRGW 62 HOWE PONY TRUSS BRIDGE STRUCTURE KIT
RS O On3 On30 KEIL LINE MODELS 48 125 INDUSTRIAL STIFF LEG DERRICK CRAFTSMAN KIT
RS O On3 On30 CHOOCH ENTERPRISES 6115 THE MINING OFFICE STRUCTURE KIT B
RS O On3 On30 CHOOCH ENTERPRISES 6106 HAND CAR SHED AND FUEL OIL SHED KIT
RS 30 O On3 On30 THOMAS A YORKE LOGGING OR MINING PORTABLE CAMP HOUSES KIT