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 sets'.

Bachmann On30 HolidayTrain set
Bachmann On30 HolidayTrain set
$75.00
Time Remaining: 17h 16m
Narrow Gauge Cumbres  Toltec 6 CD PHOTO SET 1300 JPEGS
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
$29.99
Time Remaining: 2d 10h 4m
Buy It Now for only: $29.99
San Juan Car Co DRGW Drop Bottom Gondola Train Set 724 857
San Juan Car Co DRGW Drop Bottom Gondola Train Set 724 857
$600.00
Time Remaining: 3d 13h 2m
Buy It Now for only: $600.00
San Juan Car Co Gramps Tank Car Set 63 88131
San Juan Car Co Gramps Tank Car Set 63 88131
$600.00
Time Remaining: 3d 13h 9m
Buy It Now for only: $600.00
San Juan Car Co Gramps Tank Car Set 88153 88166
San Juan Car Co Gramps Tank Car Set 88153 88166
$500.00
Time Remaining: 3d 13h 21m
Buy It Now for only: $500.00
Reaper MSP HD Sierra West Craftsman Kit Paint Set 36 1 2 Oz Bottles Miniatures
Reaper MSP HD Sierra West Craftsman Kit Paint Set 36 1 2 Oz Bottles Miniatures
$69.95
Time Remaining: 3d 16h 3m
On30 Narrow Gauge Train Set Loco Tender 3 Cars Scratch Built  Weathered Train
On30 Narrow Gauge Train Set Loco Tender 3 Cars Scratch Built Weathered Train
$475.00
Time Remaining: 5d 7h
Buy It Now for only: $475.00
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I  II  III
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
$120.00
Time Remaining: 13d 2h 10m
Buy It Now for only: $120.00
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
$89.95
Time Remaining: 15d 9h 52m
Buy It Now for only: $89.95
Hawthorne Village Spirit of America Train set New in Box with Flags
Hawthorne Village Spirit of America Train set New in Box with Flags
$79.20
Time Remaining: 16d 6h 30m
Buy It Now for only: $79.20
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
$69.00
Time Remaining: 16d 18h 59m
Buy It Now for only: $69.00
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
$500.00
Time Remaining: 18d 6h 6m
Buy It Now for only: $500.00
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
$99.99
Time Remaining: 21d 7h 6m
Buy It Now for only: $99.99
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
$260.00
Time Remaining: 24d 9h 5m
Buy It Now for only: $260.00
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
$425.95
Time Remaining: 27d 3h 11m
Buy It Now for only: $425.95
Summer Crossing Gate Hawthorne Village Bachmann HO Scale Accessory Set MIB
Summer Crossing Gate Hawthorne Village Bachmann HO Scale Accessory Set MIB
$29.99
Time Remaining: 28d 9h 32m
Buy It Now for only: $29.99
Hawthorne Village Bachmann HO Scale 90 Degree Crossing Accessory Set MIB
Hawthorne Village Bachmann HO Scale 90 Degree Crossing Accessory Set MIB
$29.99
Time Remaining: 28d 10h 6m
Buy It Now for only: $29.99
Bachmann On30 Scale Train Set Analog Norman RockwellS American Christmas 25023
Bachmann On30 Scale Train Set Analog Norman RockwellS American Christmas 25023
$276.45
Time Remaining: 32d 12h 23m
Buy It Now for only: $276.45
Bachmann On30 Scale Train Set Analog White Pass  Yukon Passenger Set 25024
Bachmann On30 Scale Train Set Analog White Pass Yukon Passenger Set 25024
$331.88
Time Remaining: 32d 12h 23m
Buy It Now for only: $331.88
Bachmann On30 Scale Train Set Battery Operated Norman Rockwell Christmas 25100
Bachmann On30 Scale Train Set Battery Operated Norman Rockwell Christmas 25100
$190.54
Time Remaining: 32d 12h 23m
Buy It Now for only: $190.54
Bachmann On30 Scale Train Caboose Off Set Cupola Caboose White Pass Yukon 26564
Bachmann On30 Scale Train Caboose Off Set Cupola Caboose White Pass Yukon 26564
$54.19
Time Remaining: 32d 12h 25m
Buy It Now for only: $54.19

Other On30 Scale train items recently purchased through this site:

Hawthorne Village Spirit of America Train set New in Box with Flags
Summer Crossing Gate Hawthorne Village Bachmann HO Scale Accessory Set MIB
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
San Juan Car Co Gramps Tank Car Set 63 88131
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
On30 Narrow Gauge Train Set Loco Tender 3 Cars Scratch Built Weathered Train
San Juan Car Co DRGW Drop Bottom Gondola Train Set 724 857
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
San Juan Car Co Gramps Tank Car Set 88153 88166
Reaper MSP HD Sierra West Craftsman Kit Paint Set 36 1 2 Oz Bottles Miniatures
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
Bachmann On30 HolidayTrain set
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
Bachmann On30 Scale Train Set Analog Norman RockwellS American Christmas 25023
Hawthorne Village Bachmann HO Scale 90 Degree Crossing Accessory Set MIB
Bachmann On30 Scale Train Set Battery Operated Norman Rockwell Christmas 25100
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
Bachmann On30 Scale Train Caboose Off Set Cupola Durango Silverton 26565
Bachmann On30 Scale Train Set Analog White Pass Yukon Passenger Set 25024
Bachmann On30 Scale Train Caboose Off Set Cupola Caboose White Pass Yukon 26564