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'.

Model Railroad Software Tools All Scales Brand New Version 184
Model Railroad Software Tools All Scales Brand New Version 184
$27.95
Time Remaining: 6d 20h 55m
Buy It Now for only: $27.95
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: 24d 14h 17m
Buy It Now for only: $99.99

Other On30 Scale train items recently purchased through this site:

On30 Scale Ultimate Railroad Prototype Picture CD Collection Set 25000+ images
Model Railroad Software Tools All Scales Brand New Version 184