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

On30 Scale BUILT Stone Railroad Branch Line Depot w Rear scratch built addition
On30 Scale BUILT Stone Railroad Branch Line Depot w Rear scratch built addition
$125.00
Time Remaining: 10d 13h 6m
Buy It Now for only: $125.00
O Scale On30 Scale Model Railroad Depot Narrow Gauge Backwoods Passenger Freight
O Scale On30 Scale Model Railroad Depot Narrow Gauge Backwoods Passenger Freight
$128.00
Time Remaining: 10d 13h 26m
Buy It Now for only: $128.00
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: 17d 13h 4m
Buy It Now for only: $99.99
RDA 153 Bucks Bath HouseRailway Design AssociatesWood Building KitOn30 Scale
RDA 153 Bucks Bath HouseRailway Design AssociatesWood Building KitOn30 Scale
$39.99
Time Remaining: 21d 23h 44m
Buy It Now for only: $39.99

Other On30 Scale train items recently purchased through this site:

RDA 153 Bucks Bath HouseRailway Design AssociatesWood Building KitOn30 Scale
On30 Scale BUILT Stone Railroad Branch Line Depot w Rear scratch built addition
O Scale On30 Scale Model Railroad Depot Narrow Gauge Backwoods Passenger
On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images