Since you missed out on it here is the UPC numbers for all of them so you can order it from Disney World Mail Order:
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Walt Disney World Mail Order
(407)-363-6200
wdw.mail.order@disney.com
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Walter E. Disney Train Set $60
40012701998
Monorail $60
40012700052
Monorail Switch Station $45
40012777013
Extra Monorail stright track $10
40012714001
extra monorail curved track $10
40012714000
Grand Floridian Resort $35
40012738112
Polynesian Resort $35
40012738113
Contemporary Resort $35
40012744403
Mad Tea Party $22
40012765881
Astro Orbiter $22
40012765883
Dumbo the Flying Elephant $22
40012765882
Cinderella's Castle $50
40012938111
The Haunted Mansion $25
40012765884
Spaceship Earth $35
40012744402
Haunted Mansion Hear's $15
40012755003
California Screamin' $60
(I dont have the UPC for this)
Orange Stinger $22
40012700058
Sun Wheel $22
40012700055
Golden Zephyr $22
40012700057
King Triton's Carosel $22
40012700056
Attractions Connector $6
(I also dont have this UPC)
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You will also need a ton of batteries, all "AA" and "C".
For the whole set you need 2 boxes of straight track, 3 boxes of curved track, all of the attractions, and as I said a lot of batteries.