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'.

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 16h 12m
Buy It Now for only: $29.99
Scale Model Masterpieces Yorke Logging Camp Cook Bunk House Set O 148
Scale Model Masterpieces Yorke Logging Camp Cook Bunk House Set O 148
$143.07
Time Remaining: 4d 12h 12m
Buy It Now for only: $143.07
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: 4d 21h 20m
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: 10d 9h 19m
Buy It Now for only: $425.95
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
$500.00
Time Remaining: 10d 12h 14m
Buy It Now for only: $500.00
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
$450.00
Time Remaining: 10d 13h 57m
Buy It Now for only: $450.00
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: 15d 1h 7m
Buy It Now for only: $69.00
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: 17d 13h 15m
Buy It Now for only: $99.99
Bachmann On30 Scale Lot of 4 1 Low Frame 29904 3 Sets 29901 Arch Bar Trucks
Bachmann On30 Scale Lot of 4 1 Low Frame 29904 3 Sets 29901 Arch Bar Trucks
$48.00
Time Remaining: 19d 16h 49m
Buy It Now for only: $48.00
Hawthorne Village Kinkade Express Train Bachmann Christmas Gate St Nicholas Set
Hawthorne Village Kinkade Express Train Bachmann Christmas Gate St Nicholas Set
$92.00
Time Remaining: 26d 34m
Buy It Now for only: $92.00
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: 26d 16h 1m
Buy It Now for only: $89.95
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
$150.00
Time Remaining: 29d 16h 25m
Buy It Now for only: $150.00
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: 29d 18h 31m
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: 29d 18h 31m
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: 29d 18h 31m
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: 29d 18h 33m
Buy It Now for only: $54.19
Bachmann On30 Scale Train Caboose Off Set Cupola Durango  Silverton 26565
Bachmann On30 Scale Train Caboose Off Set Cupola Durango Silverton 26565
$54.19
Time Remaining: 29d 18h 33m
Buy It Now for only: $54.19

Other On30 Scale train items recently purchased through this site:

Bachmann On30 Scale Lot of 4 1 Low Frame 29904 3 Sets 29901 Arch Bar Trucks
Scale Model Masterpieces Yorke Logging Camp Cook Bunk House Set O 148
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
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
THREE VOLUME SET RIO GRANDE Chasing the Narrow Gauge Vol I II III
Hawthorne Village Kinkade Express Train Bachmann Christmas Gate St Nicholas Set
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
Bachmann On30 Scale Train Caboose Off Set Cupola Durango Silverton 26565
Bachmann On30 Scale Train Set Analog Norman RockwellS American Christmas 25023
On30HO Side Dump Wagons Mining car Ore Erz Car x 3pcs 3 Stck set per box
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
Bachmann On30 Scale Train Set Battery Operated Norman Rockwell Christmas 25100