We've searched the internet and found the largest collection of On30 Scale trains for sale is on eBay. Below are the listings for '4-6-0'.

On30 4 6 0 STEAM SV O B ETWNC 12  BAC28904 ORGINAL BOX Retail53900
On30 4 6 0 STEAM SV O B ETWNC 12 BAC28904 ORGINAL BOX Retail53900
$539.00
Time Remaining: 9d 2h 49m
Buy It Now for only: $539.00
On30 4 6 0 STEAM SV O B GBR  BAC28906 ORGINAL BOX Retail 53900
On30 4 6 0 STEAM SV O B GBR BAC28906 ORGINAL BOX Retail 53900
$539.00
Time Remaining: 9d 2h 49m
Buy It Now for only: $539.00
On30 4 6 0 GREENBRIAR BIG RUN BACHMANN NEW IN BOX DCC SOUND
On30 4 6 0 GREENBRIAR BIG RUN BACHMANN NEW IN BOX DCC SOUND
$289.00
Time Remaining: 14d 4h 34m
Buy It Now for only: $289.00

Other On30 Scale train items recently purchased through this site:

On30 4 6 0 GREENBRIAR BIG RUN BACHMANN NEW IN BOX DCC SOUND
On30 4 6 0 STEAM SV O B ETWNC 12 BAC28904 ORGINAL BOX Retail53900
On30 4 6 0 STEAM SV O B GBR BAC28906 ORGINAL BOX Retail 53900