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

NEW Spectrum 25323 On30 Colorado  Southern Steam 0 4 0 Porter Powered
NEW Spectrum 25323 On30 Colorado Southern Steam 0 4 0 Porter Powered
$89.99
Time Remaining: 4d 18h 22m
Buy It Now for only: $89.99
Bachmann ON30 Porter Locomotive with 4 Customized ON30 Gondola Cars 5 Pc Set
Bachmann ON30 Porter Locomotive with 4 Customized ON30 Gondola Cars 5 Pc Set
$149.95
Time Remaining: 11d 9h 26m
Buy It Now for only: $149.95

Other On30 Scale train items recently purchased through this site:

Bachmann ON30 Porter Locomotive with 4 Customized ON30 Gondola Cars 5 Pc Set
NEW Spectrum 25323 On30 Colorado Southern Steam 0 4 0 Porter Powered