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

Roy C Link Industrial Narrow Gauge Handbook 7mm O 14 model railways RARE 
Roy C Link Industrial Narrow Gauge Handbook 7mm O 14 model railways RARE 
$73.07
Time Remaining: 4h 31m
HO Gauge Bachmann White Pass  Yukon Set
HO Gauge Bachmann White Pass Yukon Set
$289.99
Time Remaining: 11h 22m
Buy It Now for only: $289.99
Rails Neath the Palms 1st Edition 1983 by Robert Mann Hardback Gd Con Cover Iss
Rails Neath the Palms 1st Edition 1983 by Robert Mann Hardback Gd Con Cover Iss
$37.99
Time Remaining: 14h 24m
Buy It Now for only: $37.99
O SCALE On3 On30 BANTA MODEL WORKS 6131 BO Hotel
O SCALE On3 On30 BANTA MODEL WORKS 6131 BO Hotel
$94.00
Time Remaining: 14h 53m
Buy It Now for only: $94.00
HO Farm Wagons 2 pack 2501
HO Farm Wagons 2 pack 2501
$25.68
Time Remaining: 15h 20m
Buy It Now for only: $25.68
O SCALE On3 On30 BANTA MODEL WORKS bmw 149 O The Stock Pens
O SCALE On3 On30 BANTA MODEL WORKS bmw 149 O The Stock Pens
$138.00
Time Remaining: 17h 53m
Buy It Now for only: $138.00
Logging Camp Cook House Kit Scale Model Masterpieces Yorke Fine HOn3 NEW
Logging Camp Cook House Kit Scale Model Masterpieces Yorke Fine HOn3 NEW
$54.95
Time Remaining: 18h 2m
Buy It Now for only: $54.95
Northwest Short Line 28046 On30 Replacement Gear Set for Bachmann Railbus
Northwest Short Line 28046 On30 Replacement Gear Set for Bachmann Railbus
$34.95
Time Remaining: 19h 13m
Buy It Now for only: $34.95
bachmann spectrum 28671
bachmann spectrum 28671
$140.00
Time Remaining: 20h 41m
Buy It Now for only: $140.00
Bemo Schmalspur Bahn
Bemo Schmalspur Bahn
$100.00 (1 Bid)
Time Remaining: 21h 22m
Logging Camp Portable Bunk House Kits Thomas Yorke Scale Model Masterpieces HOn3
Logging Camp Portable Bunk House Kits Thomas Yorke Scale Model Masterpieces HOn3
$44.95
Time Remaining: 22h 20m
Buy It Now for only: $44.95
Historic Logging Truck custom weathered O or On30 scale lot 6
Historic Logging Truck custom weathered O or On30 scale lot 6
$89.00
Time Remaining: 23h 39m
Buy It Now for only: $89.00
Old Ford Logging Truck custom weathered lot 4  O SCALE  ON30
Old Ford Logging Truck custom weathered lot 4 O SCALE ON30
$118.00
Time Remaining: 23h 39m
Buy It Now for only: $118.00
Busch HOF 12341 Points Left  NEW ORIGINAL PACKAGING
Busch HOF 12341 Points Left NEW ORIGINAL PACKAGING
$31.04
Time Remaining: 1d 3h 17m
Buy It Now for only: $31.04
Roco 32403 H0e Electric Light Railway Soft Right New Original Packaging
Roco 32403 H0e Electric Light Railway Soft Right New Original Packaging
$34.09
Time Remaining: 1d 3h 56m
Buy It Now for only: $34.09
BEMO 2250 110 RhB CLOSED WAGON Gterwagen Gb 5090 MINT BOXED mw
BEMO 2250 110 RhB CLOSED WAGON Gterwagen Gb 5090 MINT BOXED mw
$30.01
Time Remaining: 1d 8h 47m
Buy It Now for only: $30.01
TILLIG 85181  INTERSECTION DESTRO FOR TRACK 3 WAYS H0H0e
TILLIG 85181 INTERSECTION DESTRO FOR TRACK 3 WAYS H0H0e
$31.41
Time Remaining: 1d 8h 55m
Buy It Now for only: $31.41
TILLIG 85182  INTERSECTION LEFT FOR TRACK 3 WAYS H0H0e
TILLIG 85182 INTERSECTION LEFT FOR TRACK 3 WAYS H0H0e
$31.41
Time Remaining: 1d 8h 55m
Buy It Now for only: $31.41
TILLIG 85185  TRACK THREE WAYS H0 H0e WITH GEARBOX LEFT SIDE  RIGHT
TILLIG 85185 TRACK THREE WAYS H0 H0e WITH GEARBOX LEFT SIDE RIGHT
$31.41
Time Remaining: 1d 8h 55m
Buy It Now for only: $31.41
TILLIG 85186  TRACK THREE WAYS H0 H0e WITH GEARBOX SIDE RIGHT  LEFT
TILLIG 85186 TRACK THREE WAYS H0 H0e WITH GEARBOX SIDE RIGHT LEFT
$31.41
Time Remaining: 1d 8h 59m
Buy It Now for only: $31.41
On30 Supply  Crew Train Complete Train With Locomotive Custom Built Weathered
On30 Supply Crew Train Complete Train With Locomotive Custom Built Weathered
$550.00
Time Remaining: 1d 11h 2m
Buy It Now for only: $550.00

Other On30 Scale train items recently purchased through this site:

O On3 On30 VINTAGE DON WINTER 171 WATERLOO BOY TRACTOR CRAFTSMAN KIT RARE
O On3 On30 WESTERN SCALE MODELS M 1 3 WORKING MINE ORE CARS 2 FIGURES KIT A
O On3 On30 WESTERN SCALE MODELS M 1 3 WORKING MINE ORE CARS 2 FIGURES KIT B
ON30 RAIL TRUCK CONVERSION KIT PASSENGER CAB FITS BACHMANN RAIL TRUCK
O On3 On30 WESTERN SCALE MODELS L 12 HORIZONTAL TUBULAR BRICK BOILER KIT
Bachmann Spectrum T Boiler Two Truck Shay Steam Locomotive Train On30 25699
Bachmann Spectrum 28 Ton Two Truck Class B Climax Steam Locomotive On30
On30 Bachmann Spectrum Rail Truck 29199 painted unlettered Kadees
BLACKSMITH SHOP WITH DETAILS HO HON30 HON3 KIT 4010 SEQUOIA MODELS
HARTFORD PRODUCTS MUSEUM QUALITY 1203 SCALE KIT PARTS PLANS
HOn3 DRGW Caboose by Pacific Traction
On30 Bachmann Spectrum Gondola painted brown lettered for Robesonia Iron Co
Peco LK 555 Narrow Gauge Turntable Turn Table Nickel Silver 0 165 On30 Scale
O On3 On30 WESTERN SCALE MODELS M 5 JAMISON CREEK HYDRO ELECTRIC POWER STATION
Bachmann Spectrum 2 4 4 Forney DCC Steam Locomotive On30 25478
PRECISION SCALE CO PK 608 HOn3 DRGW 30 REFRIGERATOR NIB
Hawthorne village Civil War Confederate Express Locomotive Tender + 2 cars HO
27714 Bachmann On30 Caboose PRR w Lighted Interior
Bachmann Spectrum 25128 On30 Closed Street Cars United Traction
Lot of HOn3 Trucks
Built O On3 Rio Grande Section House American Models Laserkit
Bemo Schmalspur Bahn
HOn3 DRGW ROTARY SNOW PLOW KIT BY DURANGO PRESS
Bachmann on30 Two Truck Shay
Bachmann 1203 G Scale Climax Class B 25Ton Steel Cab Uncecorated