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

Bachmann 44953 On30 14 Ton Stearns Heisler Companion Plug and Play Sound Module
Bachmann 44953 On30 14 Ton Stearns Heisler Companion Plug and Play Sound Module
$96.99
Time Remaining: 8d 15h 43m
Buy It Now for only: $96.99
Bachmann On30 Heisler Steam Locomotive KJC
Bachmann On30 Heisler Steam Locomotive KJC
$209.99
Time Remaining: 17d 16h 8m
Buy It Now for only: $209.99
On30 WISEMAN MODEL SERVICES VT SHOPS AHM HEISLER CONVERSION KIT
On30 WISEMAN MODEL SERVICES VT SHOPS AHM HEISLER CONVERSION KIT
$59.95
Time Remaining: 28d 12h
Buy It Now for only: $59.95

Other On30 Scale train items recently purchased through this site:

Bachmann On30 Heisler Steam Locomotive KJC
On30 WISEMAN MODEL SERVICES VT SHOPS AHM HEISLER CONVERSION KIT
Bachmann 44953 On30 14 Ton Stearns Heisler Companion Plug and Play Sound Module