What's up with truck prices-RANT !!!!!

What's going on out here in the world????? We've been looking for a nice used truck for my son to buy and I went to the dodge dealership today they have a super clean 2004 dodge crew cab with 168,000 miles on it and thought I could work out a deal (I've spent upwards of $200,000 at this dealership) the truck has a 5.7 in it,4 wheel drive and they SLT trim package,so I came home ran the numbers thru Kelly blue book and came out to $7500.00 to a private seller,$5700.00 trade in value and thought this will be a slam dunk !!!!! HA HA WRONG-I took $7000,00 cash down and put it on the salesman's desk,He said I'll be right back (talking to the sales manager) he comes back hands me the money and said they can't let it go for under $8700.00 !!!!!!!! I walked out dumb founded and kinda shocked !! they were asking $8900.00 for it so I thought no problem,I must be living on the moon or in outer space,So I went to another dodge dealership in another town,They had the SAME truck with 158,000 miles on it for $14,600.00 I didn't even walk in. Did I miss something that happened in the used truck market in the last year??????? Thanks Steve