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

Roco 32403 H0e Electric Light Railway Soft Right New Original Packaging
Roco 32403 H0e Electric Light Railway Soft Right New Original Packaging
$36.59
Time Remaining: 23h 26m
Buy It Now for only: $36.59
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: 1d 15h 8m
Buy It Now for only: $29.95
Roco 32401 Narrow Gauge H0E Electric Light Railway Soft Left
Roco 32401 Narrow Gauge H0E Electric Light Railway Soft Left
$36.81
Time Remaining: 4d 17h 31m
Buy It Now for only: $36.81
Backwoods Miniatures On30 Narrow Gauge Turntable Kit Model Railroad Equipment
Backwoods Miniatures On30 Narrow Gauge Turntable Kit Model Railroad Equipment
$49.95
Time Remaining: 5d 17h 35m
Noch 58671 HOM Hoe Rhne Viaduct for Narrow Gauge Railway  NIP
Noch 58671 HOM Hoe Rhne Viaduct for Narrow Gauge Railway NIP
$43.75
Time Remaining: 6d 7h 11m
Buy It Now for only: $43.75
Noch 58668 HOM Hoe bruchstein viadukt for Narrow Gauge Railway  NIP
Noch 58668 HOM Hoe bruchstein viadukt for Narrow Gauge Railway NIP
$58.34
Time Remaining: 6d 7h 11m
Buy It Now for only: $58.34
Grandt Line On3 Narrow Gauge Train Railroad Parts Assortment
Grandt Line On3 Narrow Gauge Train Railroad Parts Assortment
$99.99
Time Remaining: 6d 17h 13m
Buy It Now for only: $99.99
Simpson On3 Narrow Gauge Train Railroad Parts Assortment
Simpson On3 Narrow Gauge Train Railroad Parts Assortment
$89.99
Time Remaining: 6d 18h 5m
Buy It Now for only: $89.99
Hawthorne Village Bachmann Spirit Of America Railroad Train set
Hawthorne Village Bachmann Spirit Of America Railroad Train set
$125.00
Time Remaining: 10d 18h 12m
Buy It Now for only: $125.00
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
$174.95
Time Remaining: 10d 19h 55m
Buy It Now for only: $174.95
On18 Brookville locomotive Conversion kit by Railway Recollections Not On30
On18 Brookville locomotive Conversion kit by Railway Recollections Not On30
$27.28
Time Remaining: 19d 12h
Buy It Now for only: $27.28
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: 21d 20h 30m
Buy It Now for only: $26.95
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: 22d 7h 38m
Buy It Now for only: $99.99
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
$289.95
Time Remaining: 22d 15h 21m
Buy It Now for only: $289.95
Roco H0E 32403 Vineyard Track Light Railway Soft Right 24 Electric NEW + Box
Roco H0E 32403 Vineyard Track Light Railway Soft Right 24 Electric NEW + Box
$37.55
Time Remaining: 23d 9h 43m
Buy It Now for only: $37.55
Roco H0E 32201 s Light Railway Flex Track Length 28 3 4in 12 Pieces
Roco H0E 32201 s Light Railway Flex Track Length 28 3 4in 12 Pieces
$94.09
Time Remaining: 23d 9h 43m
Buy It Now for only: $94.09
Roco H0E 32401 Vineyard Track Light Railway Soft Left 24 Electric NEW + Box
Roco H0E 32401 Vineyard Track Light Railway Soft Left 24 Electric NEW + Box
$37.55
Time Remaining: 23d 9h 43m
Buy It Now for only: $37.55
Busch 12342 Railroad Track Right 2 5 8In R  6 7 8In 225 H0F NEW
Busch 12342 Railroad Track Right 2 5 8In R 6 7 8In 225 H0F NEW
$32.98
Time Remaining: 23d 18h 21m
Buy It Now for only: $32.98
Busch 12339 eimerkettenbagger  BUSCH FIELD RAILWAY Kit HO HOF NEW
Busch 12339 eimerkettenbagger BUSCH FIELD RAILWAY Kit HO HOF NEW
$60.08
Time Remaining: 25d 10h 28m
Buy It Now for only: $60.08
Busch HOF 12342 Railroad Track Right  NEW ORIGINAL PACKAGING
Busch HOF 12342 Railroad Track Right NEW ORIGINAL PACKAGING
$33.14
Time Remaining: 26d 11h 45m
Buy It Now for only: $33.14

Other On30 Scale train items recently purchased through this site:

Backwoods Miniatures On30 Narrow Gauge Turntable Kit Model Railroad Equipment
Simpson On3 Narrow Gauge Train Railroad Parts Assortment
Grandt Line On3 Narrow Gauge Train Railroad Parts Assortment
Roco 32401 Narrow Gauge H0E Electric Light Railway Soft Left
86 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Craftsman Kit HL109S
170 HOWE TRUSS DECK BRIDGE S On30 Model Railroad Structure Unpainted Kit HL110S
Hawthorne Village Bachmann Spirit Of America Railroad Train set
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
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
Noch 58671 HOM Hoe Rhne Viaduct for Narrow Gauge Railway NIP
Noch 58668 HOM Hoe bruchstein viadukt for Narrow Gauge Railway NIP
On18 Brookville locomotive Conversion kit by Railway Recollections Not On30
Roco H0E 32201 s Light Railway Flex Track Length 28 3 4in 12 Pieces
Roco 32403 H0e Electric Light Railway Soft Right New Original Packaging
Busch HOF 12342 Railroad Track Right NEW ORIGINAL PACKAGING
Busch 12339 eimerkettenbagger BUSCH FIELD RAILWAY Kit HO HOF NEW
Roco H0E 32401 Vineyard Track Light Railway Soft Left 24 Electric NEW + Box
Roco H0E 32403 Vineyard Track Light Railway Soft Right 24 Electric NEW + Box
Busch 12342 Railroad Track Right 2 5 8In R 6 7 8In 225 H0F NEW