Make sure that they actually ring up as $599 before you decide to buy. I have gone to two difference PB closing sales and both times the items I wanted to purchase were ringing up more than the price on the tag before the discount was applied. For example I got a replacement camelbak insulated hose and the tag said 17.99 before the 30% off discount but when I went to pay for it the register was ringing it up at 21.99 before discount. Then they fed me some BS that it's 30% off the full price which is nowhere to be found on any tag. I still got the hose for $15 after tax which is cheaper than the original price sure but it's no where near the 30% off they advertise.
Their whole store closing "deals" are just one huge ripoff IMO.
Also I saw those Grails at a the shop. They basically use cheap hubs to have it at that price. For $600 you are in custom wheel territory with dt swiss rims, spokes and hubs of choice like Hopes.