For me the worrying factor is how Android phones seem to drop in price, i sold my Galaxy S for £370 3 weeks ago and got the I4, now you can pick a GS up for £300 mark what will it be worth in a month.
You only have to look at the Xperia X10 very expensive phone when it came out and now can be had for just over £200 on the bay.
Worrying how? The desire and the galaxy you could get for about £300 from o2 VERY early on, so selling them on in a year does not really incur huge losses. The same goes for some of the contracts being so much cheaper than iphone ones so it is relative.
My mate bought a 3gs a good few months after release and ended up selling it for £200 to get the iphone4 and so incurred a loss of what £250 after prob 8months of ownership.
Not being funny but it's quite simple to understand and is so blatantly relative it's unbelievable.