Dreaming could go on for days. For ebuyer to sift thru all the orders that get placed and allocate the first come first served could take ages. NO DOUBt the same thing will happen with Amazon's 360's last year when orders coming later actually get satisfied, and ebuyer will get a lot of stress via phone email.
Its a risk taking on the strategy they've taken.
I will be amazed if you get it before christmas. I say this with my experience of Ebuyer being crap at delivering anything.