That is strange... I just put an order last week, sent an email to cancel one item, got a positive response the next day ...
Look at their web site, there is a difference between AVAILABLE and IN STOCK. AVAILABLE items means you have to wait for re-stocking, so not immediately available.
If you go to their web site and login to your account (button on top right hand corner), and it states the status of each item: example-
| CM0711-032010 | 11/22/2007 | DR 1013 | 1/350 U.S.S. Mobile Bay | 1 |  |
| CM0711-032010 | 11/22/2007 | DR 1022 | 1/350 USS Momsen DDG-92, Arleigh Burke Class Destroyer | 1 |  |
AVAILABLE means "waiting for re-stock". Good costumer service, this is part of the email response I got a day after I sent a cancellation request:
Please note all items are in stock for you, except DR 1013, RE 05041 & TA 35096. RE 05041 will be restocked in the next few days, however there is yet any concrete stocking date for DR 1013 & TA 35096. If you want us to ship you in stock items first and backorder the others, pls let us know. If you want to cancel or exchange items, please email us. I've cancelled TP05304 as per your request. You now have US$13.46 balance. You can add more items to the order or let me transfer this amount to store credit for your next purchase. Regards, Silvia Lo Luckymodel.com
infoluckymodel [info@luckymodel.com]
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I mean, this IS good costumer service.... and you can't beat their prices, as long as you are willing to wait 1-2 months on top of the re-stocking wait time.
Hope this helps!
Jim