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'.

Peco ST 400 Setrack Starter Set OO 9 HOe
Peco ST 400 Setrack Starter Set OO 9 HOe
$99.87
Time Remaining: 18h 30m
Buy It Now for only: $99.87
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: 1d 3h 56m
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: 1d 4h 29m
Buy It Now for only: $29.99
Bachmann On30 Used Set 2 Cars Silver Moon Express Agnew
Bachmann On30 Used Set 2 Cars Silver Moon Express Agnew
$39.99
Time Remaining: 4d 2h 55m
Buy It Now for only: $53.99
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: 5d 6h 47m
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: 5d 6h 47m
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: 5d 6h 47m
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: 5d 6h 48m
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: 5d 6h 48m
Buy It Now for only: $54.19
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: 7d 7h 26m
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: 7d 7h 32m
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: 7d 7h 44m
Buy It Now for only: $500.00
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: 18d 4h 16m
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
$99.00
Time Remaining: 19d 54m
Buy It Now for only: $99.00
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: 19d 13h 22m
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: 21d 29m
Buy It Now for only: $500.00
Narrow Gauge Cumbres  Toltec 6 CD PHOTO SET 1300 JPEGS
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
$29.99
Time Remaining: 21d 4h 27m
Buy It Now for only: $29.99
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: 24d 1h 30m
Buy It Now for only: $99.99
DRGW Locomotives 15mm F 1203 Model Railroad Water Slide Decal Set SJD254
DRGW Locomotives 15mm F 1203 Model Railroad Water Slide Decal Set SJD254
$32.42
Time Remaining: 24d 13h 17m
Buy It Now for only: $32.42
RGS Sunrise Locomotive 15mm F 1203 Model Railroad Water Slide Decal Set SJD255
RGS Sunrise Locomotive 15mm F 1203 Model Railroad Water Slide Decal Set SJD255
$33.54
Time Remaining: 24d 13h 19m
Buy It Now for only: $33.54
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: 29d 21h 35m
Buy It Now for only: $425.95

Other On30 Scale train items recently purchased through this site:

DRGW Locomotives 15mm F 1203 Model Railroad Water Slide Decal Set SJD254
RGS Sunrise Locomotive 15mm F 1203 Model Railroad Water Slide Decal Set SJD255
Bachmann On30 Used Set 2 Cars Silver Moon Express Agnew
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
Bachmann On30 Scale Train Caboose Off Set Cupola Durango Silverton 26565
Hawthorne Village Spirit of America Train set New in Box with Flags
San Juan Car Co Gramps Tank Car Set 88153 88166
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 63 88131
Bachmann On30 Scale Train Set Battery Operated Norman Rockwell Christmas 25100
Hawthorne Village Bachmann HO Scale 90 Degree Crossing Accessory Set MIB
Summer Crossing Gate Hawthorne Village Bachmann HO Scale Accessory Set MIB
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
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
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
Peco ST 400 Setrack Starter Set OO 9 HOe
Bachmann On30 Scale Train Caboose Off Set Cupola Caboose White Pass Yukon 26564
Bachmann On30 Scale Train Set Analog White Pass Yukon Passenger Set 25024