hmm .. good question Fred, getting new and unused would certainly be best, as the screen is so large, you wouldnt want it damaged/marked. It comes with a protective plastic layer on it, and I am still on my original one with no signs of it needing changing yet, and its in use all day every day
As to cost, I only paid £100, since I was already with Vodaphone who had them exclusively. Nowadays since its been out for a while, I'd have thought the price would have come down a bit, and his 'buy it now' price seems high, but I havent shopped around so couldnt say for sure.
Remember also, there is a little con here .. if you want to use its full Blackberry services and GPS tool, you'll need to pay an extra tenner a month for that .. something not mentioned to me when I got mine
I'm not clear about that storm being sim free either .. or is it still locked to Vodaphone ? I suspect it will be. Might be worth a call to Vodaphone direct and see what they are selling them for,.. you might be surprised
Oh yes .. remember to get the latest software update for it, as it sorts a lot of early bugs out