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: 7d 5h 38m
Buy It Now for only: $89.99

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NEW Spectrum 25323 On30 Colorado Southern Steam 0 4 0 Porter Powered