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

BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 603
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 603
$64.16
Time Remaining: 1h 9m
Buy It Now for only: $64.16
Spectrum On30 Freight Cars Billboard Reefer John Harvards Brewhouse
Spectrum On30 Freight Cars Billboard Reefer John Harvards Brewhouse
$51.97
Time Remaining: 2d 42m
Buy It Now for only: $51.97
Bachmann Spectrum On30 27466 Freight Car Billboard Reefer Bricktown Brewery NEW
Bachmann Spectrum On30 27466 Freight Car Billboard Reefer Bricktown Brewery NEW
$51.00
Time Remaining: 11d 6h 51m
Buy It Now for only: $51.00
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
$64.16
Time Remaining: 18d 20h 4m
Buy It Now for only: $64.16
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
$64.16
Time Remaining: 27d 16h 37m
Buy It Now for only: $64.16
ON30 Spectrum Billboard Reefer John Harvards 27467 Freight Car
ON30 Spectrum Billboard Reefer John Harvards 27467 Freight Car
$54.99
Time Remaining: 28d 23h 29m
Buy It Now for only: $54.99

Other On30 Scale train items recently purchased through this site:

ON30 Spectrum Billboard Reefer John Harvards 27467 Freight Car
Spectrum On30 Freight Cars Billboard Reefer John Harvards Brewhouse
Bachmann Spectrum On30 27466 Freight Car Billboard Reefer Bricktown Brewery NEW
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 606
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 605
BINKLEY KIT BUILT HOn3 NARROW GAUGE DSPPRR DENVER SOUTH PARK REEFER BOX CAR 603