You're talking about $530 spread out over two years, right? $50 down and 24x$20 monthly payments. Well wouldn't that be a higher total that what the phone is worth today, just because of the time value of money? I notice though that they don't give you any price break if you pay up front and their prices don't seem out of line, so whatever finance charge is built into the price can't be very big.
either way it is $530, if it makes you feel better to look at it as "only $20 a month" I guess that is great for you but I choose to look at it as the total real cost, because in the end that is what I will have paid for the phone. I wish there was a discount of 10% or something for paying up front because I can do that and it would make me feel better about the 925 but there isn't. Oh well, tomorrow is the big 1020 announcement, my fingers are crossed for it to be only $600 and also have t-mo freqs in it for LTE and HSPA+ so I can enjoy unlocked goodness!