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

SMOB HO Sawmill Outbuilding Kits 4 HO HOn3 by KMP Models ON SALE ONLY 2 LEFT
SMOB HO Sawmill Outbuilding Kits 4 HO HOn3 by KMP Models ON SALE ONLY 2 LEFT
$72.65
Time Remaining: 6h 28m
Buy It Now for only: $72.65
Gramps UTLX tank car narrow gauge weathered Blackstone Models HOn3 scale
Gramps UTLX tank car narrow gauge weathered Blackstone Models HOn3 scale
$48.00
Time Remaining: 9h 37m
VINTAGE QUALITY CRAFT MODELS HAYDENTON COVERED DEPOT KIT 103 HO SCALE
VINTAGE QUALITY CRAFT MODELS HAYDENTON COVERED DEPOT KIT 103 HO SCALE
$33.95
Time Remaining: 1d 11h 37m
Buy It Now for only: $44.50
Rio Grande Models SN3 DRGW Dump Car Kit
Rio Grande Models SN3 DRGW Dump Car Kit
$32.00
Time Remaining: 4d 20h 9m
Buy It Now for only: $32.00
HOn3 10 CS CABOOSE 4 WHELL BRASS SLIM PRINCESS BY BALBOA SCALE MODELS
HOn3 10 CS CABOOSE 4 WHELL BRASS SLIM PRINCESS BY BALBOA SCALE MODELS
$90.00
Time Remaining: 6d 11h 42m
Buy It Now for only: $90.00
O ON30 SILVER CITY MODELS LOGGING STEAM BOILER FUEL TANK KIT
O ON30 SILVER CITY MODELS LOGGING STEAM BOILER FUEL TANK KIT
$39.95
Time Remaining: 7d 5h 52m
Buy It Now for only: $39.95
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
$26.00
Time Remaining: 7d 5h 52m
Buy It Now for only: $26.00
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
$36.00
Time Remaining: 7d 5h 53m
Buy It Now for only: $36.00
Rio Grande Models 3030 DRGW Idler Flat For Derrick OP Kit
Rio Grande Models 3030 DRGW Idler Flat For Derrick OP Kit
$29.95
Time Remaining: 11d 20h 40m
Buy It Now for only: $29.95
Blackstone Models HOn3 East Broad Top 3 Bay Hopper Weathered Rd 951 B340703W
Blackstone Models HOn3 East Broad Top 3 Bay Hopper Weathered Rd 951 B340703W
$59.95
Time Remaining: 26d 20h 38m
Buy It Now for only: $59.95
On3 On30 WISEMAN MODELS SM 102 DRGW OPEN PLATFORM COMBINE PASSENGER CAR
On3 On30 WISEMAN MODELS SM 102 DRGW OPEN PLATFORM COMBINE PASSENGER CAR
$89.95
Time Remaining: 28d 2h 57m
Buy It Now for only: $89.95

Other On30 Scale train items recently purchased through this site:

HOn3 10 CS CABOOSE 4 WHELL BRASS SLIM PRINCESS BY BALBOA SCALE MODELS
Rio Grande Models 3030 DRGW Idler Flat For Derrick OP Kit
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
SMOB HO Sawmill Outbuilding Kits 4 HO HOn3 by KMP Models ON SALE ONLY 2 LEFT
O ON30 SILVER CITY MODELS LOGGING STEAM BOILER FUEL TANK KIT
On3 On30 WISEMAN MODELS SM 102 DRGW OPEN PLATFORM COMBINE PASSENGER CAR
Rio Grande Models SN3 DRGW Dump Car Kit
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
Blackstone Models HOn3 East Broad Top 3 Bay Hopper Weathered Rd 951 B340703W
Gramps UTLX tank car narrow gauge weathered Blackstone Models HOn3 scale
VINTAGE QUALITY CRAFT MODELS HAYDENTON COVERED DEPOT KIT 103 HO SCALE