Rare Collector iPads....
I am on the search for rare iPads.. What would be considered as the rarest collector iPads on the market? I'm new to collecting, and am in the process of finding out which ones I should be on the look out for.
There's a very rare Michael Jackson iPad on eBay Australia at the moment (http://www.ebay.com/itm/Mega-Rare-MICHAEL-JACKSON-Apple-iPad-PROMO-ONLY-...), which is supposed to be only 1 of 150 made world-wide (and could only be won in competitions etc). So I am wondering, is this the rarest one out there, or are there others I should be on the look for...?
Thanks for any help!