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

Model railroad 1203 scale Narrow gauge LS Caboose DRGW detailed interior
Model railroad 1203 scale Narrow gauge LS Caboose DRGW detailed interior
$200.00
Time Remaining: 2d 16h 24m
Buy It Now for only: $260.00
HO HOn3 SIERRAWEST SCALE MODELS 204 RAILROAD CAMP CRAFTSMAN STRUCTURE KIT
HO HOn3 SIERRAWEST SCALE MODELS 204 RAILROAD CAMP CRAFTSMAN STRUCTURE KIT
$249.95
Time Remaining: 3d 16h 17m

Other On30 Scale train items recently purchased through this site:

Model railroad 1203 scale Narrow gauge LS Caboose DRGW detailed interior
HO HOn3 SIERRAWEST SCALE MODELS 204 RAILROAD CAMP CRAFTSMAN STRUCTURE KIT