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'.

Bachmann On30 Scale Train Steam 0 4 2 Porter DCC Equipped Greenbrier
Bachmann On30 Scale Train Steam 0 4 2 Porter DCC Equipped Greenbrier
$62.21
Time Remaining: 18d 12h 15m
Buy It Now for only: $62.21
Bachmann Spectrum 28299 On30 0 4 2 Porter Stem Loco DCC Train
Bachmann Spectrum 28299 On30 0 4 2 Porter Stem Loco DCC Train
$115.00
Time Remaining: 29d 18h 27m
Buy It Now for only: $115.00

Other On30 Scale train items recently purchased through this site:

Bachmann On30 Scale Train Steam 0 4 2 Porter DCC Equipped Greenbrier
Bachmann Spectrum 28299 On30 0 4 2 Porter Stem Loco DCC Train