So, after spending two years with my first gen iPhone, I upgraded to a 3GS on launch day last year, obviously with no penalty. I'd quite like to upgrade again this summer, but of course I won't qualify for a full subsidy. The obvious thing to do is to sell my 3GS to subsidise the new phone - it's jailbroken/unlocked and in mint condition, so I presume I could get a reasonable amount for it. I'm sure quite a few people did this for 3G->3GS last summer, so I'm wondering - when did you sell? Before the announcement of the new phones, or after? How much did you get? etc.