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

SUPERB BRIEFCASE MODEL RAILWAY LAYOUT AND TRAIN BY MOUNTAIN LAKE MODELS RAILWAYS
SUPERB BRIEFCASE MODEL RAILWAY LAYOUT AND TRAIN BY MOUNTAIN LAKE MODELS RAILWAYS
$1,718.27
Time Remaining: 4d 2h 34m
Buy It Now for only: $1,718.27
On30 Model Railroad Depot BUILT w Platform Narrow Gauge Backwoods Depot
On30 Model Railroad Depot BUILT w Platform Narrow Gauge Backwoods Depot
$158.00
Time Remaining: 5d 6h 27m
Buy It Now for only: $158.00
On30 BUILT Model Railroad Depot w Platform Narrow Gauge Backwoods Passenger Depo
On30 BUILT Model Railroad Depot w Platform Narrow Gauge Backwoods Passenger Depo
$150.00
Time Remaining: 5d 6h 28m
Buy It Now for only: $150.00
On30 Stone Model Railroad Building BUILT Millwork Included Narrow Gauge Railroa
On30 Stone Model Railroad Building BUILT Millwork Included Narrow Gauge Railroa
$65.00
Time Remaining: 5d 7h 6m
Buy It Now for only: $65.00
On30 Model Railroad Hotel Built Finished Lighted Narrow Gauge Model Railroad Bld
On30 Model Railroad Hotel Built Finished Lighted Narrow Gauge Model Railroad Bld
$120.00
Time Remaining: 5d 7h 7m
Buy It Now for only: $120.00
On30 Model Railroad Building Built  Painted On30 Narrow Gauge Blacksmith Shop
On30 Model Railroad Building Built Painted On30 Narrow Gauge Blacksmith Shop
$100.00
Time Remaining: 5d 7h 8m
Buy It Now for only: $100.00
Dundas Models DM56 Festiniog Railway Granite End Door Wagon Pack of 5 T48
Dundas Models DM56 Festiniog Railway Granite End Door Wagon Pack of 5 T48
$37.23
Time Remaining: 6d 13h 49m
Buy It Now for only: $37.23
Dundas Models DM25 Festiniog Railway 2 Ton Steel Sided Slate Wagon 5 Pack T48
Dundas Models DM25 Festiniog Railway 2 Ton Steel Sided Slate Wagon 5 Pack T48
$35.17
Time Remaining: 6d 13h 50m
Buy It Now for only: $35.17
86 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Craftsman Kit HL109S
86 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Craftsman Kit HL109S
$179.95
Time Remaining: 6d 16h 57m
Buy It Now for only: $179.95
O On30 24 WATERLINE LOGS Model Railroad Scenery Unpainted Resin Details FR1665
O On30 24 WATERLINE LOGS Model Railroad Scenery Unpainted Resin Details FR1665
$26.95
Time Remaining: 18d 20h 21m
Buy It Now for only: $26.95
16 LOG BRONC O On30 Model Railroad Waterline Hull Unpainted Cast Resin Kit FR65
16 LOG BRONC O On30 Model Railroad Waterline Hull Unpainted Cast Resin Kit FR65
$29.95
Time Remaining: 20d 9h 28m
Buy It Now for only: $29.95
170 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Unpainted Kit HL110S
170 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Unpainted Kit HL110S
$294.95
Time Remaining: 20d 9h 36m
Buy It Now for only: $294.95

Other On30 Scale train items recently purchased through this site:

SUPERB BRIEFCASE MODEL RAILWAY LAYOUT AND TRAIN BY MOUNTAIN LAKE MODELS RAILWAYS
16 LOG BRONC O On30 Model Railroad Waterline Hull Unpainted Cast Resin Kit FR65
O On30 24 WATERLINE LOGS Model Railroad Scenery Unpainted Resin Details FR1665
On30 BUILT Model Railroad Depot w Platform Narrow Gauge Backwoods Passenger Depo
On30 Model Railroad Building Built Painted On30 Narrow Gauge Blacksmith Shop
On30 Model Railroad Hotel Built Finished Lighted Narrow Gauge Model Railroad Bld
170 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Unpainted Kit HL110S
On30 Model Railroad Depot BUILT w Platform Narrow Gauge Backwoods Depot
On30 Stone Model Railroad Building BUILT Millwork Included Narrow Gauge Railroa
86 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Craftsman Kit HL109S
Dundas Models DM56 Festiniog Railway Granite End Door Wagon Pack of 5 T48
Dundas Models DM25 Festiniog Railway 2 Ton Steel Sided Slate Wagon 5 Pack T48