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 ON 30 item 27391 logging  mining cars skeleton log cars set of 3
Bachmann ON 30 item 27391 logging mining cars skeleton log cars set of 3
$86.00 (4 Bids)
Time Remaining: 7h 14m
Bachmann Spectrum ON30 Set Of 2 Flat Cars
Bachmann Spectrum ON30 Set Of 2 Flat Cars
$40.15 (1 Bid)
Time Remaining: 3d 7h 25m
BCH Minitrains 11 pc Plymouth Freight set HOn2 1 2
BCH Minitrains 11 pc Plymouth Freight set HOn2 1 2
$90.00
Time Remaining: 3d 8h 3m
Buy It Now for only: $90.00
BCH Minitrains GMEINDER 9 pc train set Factory new Silver diesel HOn2 1 2
BCH Minitrains GMEINDER 9 pc train set Factory new Silver diesel HOn2 1 2
$75.00
Time Remaining: 3d 8h 8m
Buy It Now for only: $75.00
BCH Minitrains GMEINDER 9 pc train set Factory new BLUE diesel HOn2 1 2
BCH Minitrains GMEINDER 9 pc train set Factory new BLUE diesel HOn2 1 2
$75.00
Time Remaining: 3d 8h 13m
Buy It Now for only: $75.00
American Flyer No M4239 Cardboard Canister  Lid for No 26782 Trestle Set
American Flyer No M4239 Cardboard Canister Lid for No 26782 Trestle Set
$29.99
Time Remaining: 3d 19h 56m
Buy It Now for only: $29.99
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: 4d 51m
Buy It Now for only: $89.95
TWO BACHMANN HIGHSIDE GONDOLASON THE SAME SET OF TWO 2 TRUCKS
TWO BACHMANN HIGHSIDE GONDOLASON THE SAME SET OF TWO 2 TRUCKS
$75.95
Time Remaining: 5d 3h 10m
Buy It Now for only: $98.75
Hawthorne Village Model Train Set Spirit Of America Express CollectionHO
Hawthorne Village Model Train Set Spirit Of America Express CollectionHO
$185.99
Time Remaining: 5d 10h 1m
Buy It Now for only: $185.99
HAWTHORNE VILLAGE SPIRIT OF AMERICA EXPRESS COLLECTION TRAIN SET OF 9 ON30 Scale
HAWTHORNE VILLAGE SPIRIT OF AMERICA EXPRESS COLLECTION TRAIN SET OF 9 ON30 Scale
$229.99
Time Remaining: 5d 23h 45m
Buy It Now for only: $229.99
ON30 Bachmann Spectrum Jingle Bell Express Train Set 25012 North pole
ON30 Bachmann Spectrum Jingle Bell Express Train Set 25012 North pole
$279.99
Time Remaining: 6d 22h 10m
Buy It Now for only: $279.99
TRAIN SET 4 HAWTHORNE VILLAGE SPIRIT OF AMERICA SET OF 4 NEW COLLECTIBLE
TRAIN SET 4 HAWTHORNE VILLAGE SPIRIT OF AMERICA SET OF 4 NEW COLLECTIBLE
$100.00
Time Remaining: 7d 2h 46m
Buy It Now for only: $100.00
NEW Bachmann On30 4 4 0 2 6 6 2 2 Engine set Both DCC Equip28321 28760
NEW Bachmann On30 4 4 0 2 6 6 2 2 Engine set Both DCC Equip28321 28760
$375.00
Time Remaining: 7d 4h 10m
Buy It Now for only: $375.00
Logging Camp Cook Bunk House Set Thomas Yorke Scale Model Masterpieces On3 NEW
Logging Camp Cook Bunk House Set Thomas Yorke Scale Model Masterpieces On3 NEW
$149.95
Time Remaining: 8d 23h 23m
Buy It Now for only: $149.95
Narrow Gauge Cumbres  Toltec 6 CD PHOTO SET 1300 JPEGS
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
$29.99
Time Remaining: 10d 1h 3m
Buy It Now for only: $29.99
Roco H0E 31028 3 Large h0e schmalspur Narrow Gauge Track Set 37 pcs NEW
Roco H0E 31028 3 Large h0e schmalspur Narrow Gauge Track Set 37 pcs NEW
$161.37
Time Remaining: 13d 13h 30m
Buy It Now for only: $161.37
ENHANCED Spectrum On30 CS set
ENHANCED Spectrum On30 CS set
$449.00
Time Remaining: 15d 18m
Buy It Now for only: $449.00
Spirit of America Train by Bachmann  Hawthorne Village 8 Car Set Excellen
Spirit of America Train by Bachmann Hawthorne Village 8 Car Set Excellen
$199.00
Time Remaining: 16d 8h 34m
Buy It Now for only: $199.00
HAWTHORNE VILLAGE CHRISTMAS COCA COLA  5 piece train SET  track  Great DEAL
HAWTHORNE VILLAGE CHRISTMAS COCA COLA  5 piece train SET track  Great DEAL
$280.00
Time Remaining: 16d 9h 50m
Buy It Now for only: $280.00
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: 17d 18h 10m
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: 17d 21h 5m
Buy It Now for only: $500.00

Other On30 Scale train items recently purchased through this site:

ENHANCED Spectrum On30 CS set
HAWTHORNE VILLAGE SPIRIT OF AMERICA EXPRESS COLLECTION TRAIN SET OF 9 ON30 Scale
Narrow Gauge Cumbres Toltec 6 CD PHOTO SET 1300 JPEGS
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET 13 PC COMPLETE LARGE SET
Hawthorne Village Model Train Set Spirit Of America Express CollectionHO
Spirit of America Train by Bachmann Hawthorne Village 8 Car Set Excellen
BCH Minitrains 11 pc Plymouth Freight set HOn2 1 2
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
HAWTHORNE VILLAGE CHRISTMAS COCA COLA  5 piece train SET track  Great DEAL
ON30 Bachmann Spectrum Jingle Bell Express Train Set 25012 North pole
BACHMANN HAWTHORNE VILLAGE SPIRIT OF AMERICA TRAIN SET LARGE SET
BCH Minitrains GMEINDER 9 pc train set Factory new Silver diesel HOn2 1 2
BCH Minitrains GMEINDER 9 pc train set Factory new BLUE diesel HOn2 1 2
Logging Camp Cook Bunk House Set Thomas Yorke Scale Model Masterpieces On3 NEW
Bachmann Spectrum ON30 Set Of 2 Flat Cars
ENHANCED Bachmann On30 Thomas Kinkade Christmas Express set
O SCALE On3 On30 WISEMAN MODEL SERVICES LOGGING OR MINING CAMP 4 CABIN SET KIT
TRAIN SET 4 HAWTHORNE VILLAGE SPIRIT OF AMERICA SET OF 4 NEW COLLECTIBLE
HAWTHORNE VILLAGE CHRISTMAS COCA COLA LOCOMOTIVE TENDER TRAIN SET
NEW Bachmann On30 4 4 0 2 6 6 2 2 Engine set Both DCC Equip28321 28760
American Flyer No M4239 Cardboard Canister Lid for No 26782 Trestle Set
Bachmann ON 30 item 27391 logging mining cars skeleton log cars set of 3
TWO BACHMANN HIGHSIDE GONDOLASON THE SAME SET OF TWO 2 TRUCKS
Roco H0E 31028 3 Large h0e schmalspur Narrow Gauge Track Set 37 pcs NEW