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 scale train'.

BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
$65.04
Time Remaining: 5h 13m
Buy It Now for only: $65.04
O On30 On3  LINESIDE SUPPLY Resin building kit brand new reissue
O On30 On3 LINESIDE SUPPLY Resin building kit brand new reissue
$36.00
Time Remaining: 12h 8m
Buy It Now for only: $36.00
Peco large Radius Switches 2 LH 2 RH Connverted For On30 Use With Switch Machine
Peco large Radius Switches 2 LH 2 RH Connverted For On30 Use With Switch Machine
$50.00
Time Remaining: 12h 14m
Micro Engineering 14 404 On30 5 CODE 83 RH TURNOUT
Micro Engineering 14 404 On30 5 CODE 83 RH TURNOUT
$28.95
Time Remaining: 16h 43m
Buy It Now for only: $28.95
On30 turnout Or Ho uses
On30 turnout Or Ho uses
$25.00
Time Remaining: 17h 59m
Hit and Miss Gasoline Logging Engine on Skidder custom weathered lot 4
Hit and Miss Gasoline Logging Engine on Skidder custom weathered lot 4
$185.00
Time Remaining: 19h 20m
Buy It Now for only: $185.00
O ON30 SCALE SILVER CITY MODELS RESIN STEAM BOILER LOGGING
O ON30 SCALE SILVER CITY MODELS RESIN STEAM BOILER LOGGING
$39.95
Time Remaining: 19h 27m
Buy It Now for only: $39.95
On30 O scale Logging Tractor Donkey custom weathered
On30 O scale Logging Tractor Donkey custom weathered
$165.00
Time Remaining: 20h 14m
Logging Tractor Donkey after historic pictures custom weathered
Logging Tractor Donkey after historic pictures custom weathered
$168.00
Time Remaining: 20h 14m
On30 Logging Steam Locomotive Switcher TSU DCC  Sound custom weathered
On30 Logging Steam Locomotive Switcher TSU DCC Sound custom weathered
$345.00
Time Remaining: 20h 14m
N scale custom built 8 story lighted Hilton hotel  antenna
N scale custom built 8 story lighted Hilton hotel antenna
$49.99
Time Remaining: 21h 9m
On3 On30 O CUSTOM BUILT ROGERS PLUMBING  HEATING SUPPLIES BUILDING W TRUCK
On3 On30 O CUSTOM BUILT ROGERS PLUMBING HEATING SUPPLIES BUILDING W TRUCK
$149.95
Time Remaining: 21h 12m
Buy It Now for only: $149.95
On3 On30 CUSTOM BUILT WOOD HOWE TRUSS BRIDGE 14 LONG
On3 On30 CUSTOM BUILT WOOD HOWE TRUSS BRIDGE 14 LONG
$49.95
Time Remaining: 21h 12m
Buy It Now for only: $49.95
HOn3 HOn30 HO CUSTOM BUILT 2 STORY WOOD WAREHOUSE
HOn3 HOn30 HO CUSTOM BUILT 2 STORY WOOD WAREHOUSE
$119.95
Time Remaining: 21h 13m
Buy It Now for only: $119.95
Sn3 S CRAFTSMAN RAGGS RICHES BUILT GORDON KIMBALL HARDWARE POWDER FUSE STORE
Sn3 S CRAFTSMAN RAGGS RICHES BUILT GORDON KIMBALL HARDWARE POWDER FUSE STORE
$219.95
Time Remaining: 21h 13m
Buy It Now for only: $219.95
On3 On30 O CUSTOM BUILT WOOD HOWE TRUSS BRIDGE W ABUTMENTS 16 LONG
On3 On30 O CUSTOM BUILT WOOD HOWE TRUSS BRIDGE W ABUTMENTS 16 LONG
$149.95
Time Remaining: 21h 13m
Buy It Now for only: $149.95
KMP Models HO HOn3 Steam Pile Driver Kit
KMP Models HO HOn3 Steam Pile Driver Kit
$59.00
Time Remaining: 23h 7m
Buy It Now for only: $59.00
Bachmann On30 HolidayTrain set
Bachmann On30 HolidayTrain set
$75.00
Time Remaining: 23h 11m
Bachmann 26003 On30 Excursion Car Yellow with Silver Roof
Bachmann 26003 On30 Excursion Car Yellow with Silver Roof
$51.44
Time Remaining: 1d 4h 56m
Buy It Now for only: $51.44
NEW Hawthorne Village ON30 Scale 2 6 0 Loco  Tender Christmas Express Bundle
NEW Hawthorne Village ON30 Scale 2 6 0 Loco Tender Christmas Express Bundle
$125.00
Time Remaining: 1d 11h 48m
ON30 Spectrum Billboard Reefer Rohrbachs Brewing 27482 Freight Car
ON30 Spectrum Billboard Reefer Rohrbachs Brewing 27482 Freight Car
$89.00
Time Remaining: 1d 11h 50m
Buy It Now for only: $89.00

Other On30 Scale train items recently purchased through this site:

HO HOn3 Shinohara Code 70 Dual Gauge Bundle of 10 7 New 3+ extra Used
Shinohara HOn3 Code 70 Crossings
HOn3 Shinohara Code 70 Flex 39 Box of 10 NIB Box 1
HOn3 Shinohara Code 70 Flex 39 Box of 10 7 New 3 Used NIB Box 3
O On3 On30 WISEMAN MODEL SERVICES DP89 2 SPOOL WINCH ON SKID KIT D
HO HOn3 Shinohara Code 70 Dual Gauge Flex Box of 10 NIB Box 2
Kitwood Hill Models ON30 ON3 Broach Supplies
Kitwood Hill Models ON30 ON3 Ore Bin and Tipple
Hunterline Timber Tunnel Liner and Timber Tunnel Portal
Blackstone HOn3 DRGW 30ft Refrigerator Car Royal Gorge herald 43
Fast Traks ON3 Code 100 Set of 12 hand laid 6 switches
Fast Traks ON3 Code 83 Straight 23 27 Curved Assemby Fixtures
Fast Traks ON3 Code 100 Straight 24 27 29 31 Curved Fixtures
16 Morgan Hill Models ON30 ON3 20 Logging Car Kits
ON30 RAIL TRUCK CONVERSION KIT PASSENGER CAB FITS BACHMANN RAIL TRUCK
Quantity TWO On3 Trains of Texas DRGW Hermosa Creek Howe Truss Bridges No 207
On30 turnout Or Ho uses
O On3 On30 1 48 WISEMAN MODEL SERVICES STATIONARY HORIZONTAL BOILER KIT
Micro Engineering On30 12 138 6 PCS 18 FEET ON 2 1 2 WEATHERED CODE 83
PECO SL E191 RIGHT HAND SL E192 LEFT HAND SMALL RADIUS ELECTROFROG 2R 3L
Micro Engineering 14 454 On30 5 CODE 70 RH TURNOUT BIGDISCOUNTTRAINS
Micro Engineering 14 453 On30 5 CODE 70 LH TURNOUT BIGDISCOUNTTRAINS
HON3 CUSTOM WOODEN TURNOUT TIE JIG LEFT AND RIGHT 4 PER SHEET
Micro Engineering 10 138 On30 ON 2 1 2 NON WEA CODE 83 BIGDISCOUNTTRAINS
Bachmann 44957 On30 2 6 0 Plug and Play Sound Module