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

NEW Hawthorne Village ON30 Scale 2 6 0 Loco  Tender Christmas Express Bundle
NEW Hawthorne Village ON30 Scale 2 6 0 Loco Tender Christmas Express Bundle
$125.00
Time Remaining: 14h 29m
HAWTHORNE VILLAGE COCA COLA CHRISTMAS EXPRESS TRAIN BY BACHMANN COMPLETE
HAWTHORNE VILLAGE COCA COLA CHRISTMAS EXPRESS TRAIN BY BACHMANN COMPLETE
$695.00
Time Remaining: 2d 18h 24m
g Bachmann On 30 25127 Closed Street Car Christmas BOXED Season Greetings
g Bachmann On 30 25127 Closed Street Car Christmas BOXED Season Greetings
$75.00
Time Remaining: 12d 8h 26m
Buy It Now for only: $75.00
Hawthorne Village Thomas Kinkade Christmas Express Train Set New
Hawthorne Village Thomas Kinkade Christmas Express Train Set New
$225.00
Time Remaining: 14d 16h 8m
Buy It Now for only: $225.00
HO HO HO HOLIDAY GONDOLA CAR HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
HO HO HO HOLIDAY GONDOLA CAR HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
$74.99
Time Remaining: 19d 15h 13m
Buy It Now for only: $74.99
RUDOLPHS CABOOSE HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
RUDOLPHS CABOOSE HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
$139.99
Time Remaining: 19d 18h 12m
Buy It Now for only: $139.99
MERRY CHRISTMAS TO ALL BOXCAR HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
MERRY CHRISTMAS TO ALL BOXCAR HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
$84.99
Time Remaining: 19d 18h 20m
Buy It Now for only: $84.99
NIGHT BEFORE CHRISTMAS BAGGAGE HAWTHORNE RUDOLPH CHRISTMAS TOWN EXPRESS NIB
NIGHT BEFORE CHRISTMAS BAGGAGE HAWTHORNE RUDOLPH CHRISTMAS TOWN EXPRESS NIB
$84.99
Time Remaining: 19d 18h 24m
Buy It Now for only: $84.99
ELF PASSENGER CAR HAWTHORNE RUDOLPH CHRISTMAS TOWN EXPRESS NIB
ELF PASSENGER CAR HAWTHORNE RUDOLPH CHRISTMAS TOWN EXPRESS NIB
$84.99
Time Remaining: 19d 18h 27m
Buy It Now for only: $84.99
RUDOLPHS  ABOMINABLE SNOW MONSTER CHRISTMAS TOWN EXPRESS BOX CAR
RUDOLPHS ABOMINABLE SNOW MONSTER CHRISTMAS TOWN EXPRESS BOX CAR
$59.99
Time Remaining: 21d 13h 51m
Buy It Now for only: $59.99
RUDOLPHS ABOMINABLE SNOW MONSTER CHRISTMAS TOWN EXPRESS CAR CONTROLS FIGURES
RUDOLPHS ABOMINABLE SNOW MONSTER CHRISTMAS TOWN EXPRESS CAR CONTROLS FIGURES
$79.99
Time Remaining: 21d 15h 4m
Buy It Now for only: $79.99
Bachmann On30 No 25127 Closed Street Car Christmas in Box
Bachmann On30 No 25127 Closed Street Car Christmas in Box
$60.00
Time Remaining: 21d 17h 17m
Buy It Now for only: $60.00
Bachmann On30 No 25128 Closed Street Car Christmas in Box+Extras
Bachmann On30 No 25128 Closed Street Car Christmas in Box+Extras
$70.00
Time Remaining: 21d 22h 49m
Buy It Now for only: $70.00

Other On30 Scale train items recently purchased through this site:

MERRY CHRISTMAS TO ALL BOXCAR HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
RUDOLPHS ABOMINABLE SNOW MONSTER CHRISTMAS TOWN EXPRESS BOX CAR
NIGHT BEFORE CHRISTMAS BAGGAGE HAWTHORNE RUDOLPH CHRISTMAS TOWN EXPRESS NIB
RUDOLPHS ABOMINABLE SNOW MONSTER CHRISTMAS TOWN EXPRESS CAR CONTROLS FIGURES
RUDOLPHS CABOOSE HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
Hawthorne Village Thomas Kinkade Christmas Express Train Set New
ELF PASSENGER CAR HAWTHORNE RUDOLPH CHRISTMAS TOWN EXPRESS NIB
HAWTHORNE VILLAGE COCA COLA CHRISTMAS EXPRESS TRAIN BY BACHMANN COMPLETE
HO HO HO HOLIDAY GONDOLA CAR HAWTHORNE RUDOLPHS CHRISTMAS TOWN EXPRESS NIB
Bachmann On30 No 25128 Closed Street Car Christmas in Box+Extras
Bachmann On30 No 25127 Closed Street Car Christmas in Box
NEW Hawthorne Village ON30 Scale 2 6 0 Loco Tender Christmas Express Bundle
g Bachmann On 30 25127 Closed Street Car Christmas BOXED Season Greetings