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

BTS S SN3 McCabe Lumber Co Complete Set Of 7 Camp Cars New
BTS S SN3 McCabe Lumber Co Complete Set Of 7 Camp Cars New
$400.00
Time Remaining: 8d 1h 54m
Buy It Now for only: $400.00
ENHANCED Spectrum On30 CS set
ENHANCED Spectrum On30 CS set
$449.00
Time Remaining: 16d 56m
Buy It Now for only: $449.00

Other On30 Scale train items recently purchased through this site:

ENHANCED Spectrum On30 CS set
BTS S SN3 McCabe Lumber Co Complete Set Of 7 Camp Cars New