Okay....
Parts availability and price vary time to time. When the price of parts goes up, wouldnt they charge you more? That sounds logical. Recently, pricing for almost everything has increased. I know that DC is amazing and all, but i doubt thatd be any different for them.
Shipping changes over time too.
Reps are also different. My "local" shop quoted me around $200 more than dwright and CJ18. Of course that was many months ago though...the principle doesnt normally change.