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

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: 3h 2m
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: 3d 11h 34m
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: 5d 3h 7m
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: 5d 21h 17m
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: 5d 21h 17m
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: 5d 21h 18m
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: 10d 12h 5m
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: 25d 12h 3m
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: 26d 18h 22m
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
ON3 ON30 SILVER CITY MODELS DRGW 1872 12 4 WHEEL BOX CAR KIT
Rio Grande Models 3030 DRGW Idler Flat For Derrick OP Kit
On3 On30 WISEMAN MODELS SM 102 DRGW OPEN PLATFORM COMBINE PASSENGER CAR
Blackstone Models HOn3 East Broad Top 3 Bay Hopper Weathered Rd 951 B340703W
ON3 ON30 SILVER CITY MODELS DRGW 1872 17 4 WHEEL GONDOLA CAR KIT
O ON30 SILVER CITY MODELS LOGGING STEAM BOILER FUEL TANK KIT
Rio Grande Models SN3 DRGW Dump Car Kit
VINTAGE QUALITY CRAFT MODELS HAYDENTON COVERED DEPOT KIT 103 HO SCALE