You got quoted a decent price in my point of view.
(according to Pyspeed's location) = 8.375%
(according to Pyspeed's website shipped to a random norcal zip code) = $175
= $1582.79 Webprice
He might of deleted the thread because posting prices causes debate. I totally respect most of the vendors when I get a quoted price. I personally don't see a reason for them to explain anything. Prices for you and I are all different. He or she might have bought a lot of items. Or it just could be that different promotions were running at different times.