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: 6d 9h 48m
Buy It Now for only: $539.00
On30 4 6 0 BALDWIN SV O B P U  BAC28902 ORGINAL BOX Retail 53900
On30 4 6 0 BALDWIN SV O B P U BAC28902 ORGINAL BOX Retail 53900
$539.00
Time Remaining: 6d 9h 48m
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: 6d 9h 48m
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
$309.00
Time Remaining: 17d 12h 53m
Buy It Now for only: $309.00

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 BALDWIN SV O B P U BAC28902 ORGINAL BOX Retail 53900
On30 4 6 0 STEAM SV O B GBR BAC28906 ORGINAL BOX Retail 53900
On30 4 6 0 STEAM SV O B ETWNC 12 BAC28904 ORGINAL BOX Retail53900