Mangaya does not work on the first come first 
serve basis unfortunately.

If under 3 people order the same cel, it goes to 
a lottery and the person who gets it is randomly 
chosen (at least I think that's how it works...)

If 4 or more people order the same cel, it goes 
to a one time silent auction.  Han will contact 
you, and you will give him the price you would 
pay for the cel. For ex: the cel is on the site 
for 150.00 and it goes to the auction - he will 
email and say that more then 4 people have 
requested the cel, and it is going to auction. 
You really want the cel, badly enough that you 
would pay more then the 150.00 it's showing. So 
you email back and say you'd pay 250.00.  Then, 
whoever offers the most will get the cel (for 
what they offered of course).

I don't like the auction system really, but for 
a true wishlist cel... at least you have a 
better chance I guess. 

I hope that helped at least a little. :)