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

Bachmann On30 HolidayTrain set
Bachmann On30 HolidayTrain set
$75.00
Time Remaining: 16h 11m
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 8h 59m
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 11h 57m
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 12h 4m
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 12h 16m
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 14h 58m
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 5h 55m
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 1h 5m
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 8h 47m
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 5h 25m
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 17h 54m
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 5h 1m
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 6h 1m
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 8h
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 2h 6m
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 8h 27m
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 9h
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 11h 18m
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 11h 18m
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 11h 18m
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 11h 20m
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
2 car set 1203 Scale Narrow Gauge Fall River Gondola flat car
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
On30 Narrow Gauge Train Set Loco Tender 3 Cars Scratch Built Weathered Train
Reaper MSP HD Sierra West Craftsman Kit Paint Set 36 1 2 Oz Bottles Miniatures
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
San Juan Car Co Gramps Tank Car Set 63 88131
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
San Juan Car Co DRGW Drop Bottom Gondola Train Set 724 857
San Juan Car Co Gramps Tank Car Set 88153 88166
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