When I think of Hitachi I think of computer components or motorcycles... but I guess they make HDTVs too. This 55-inch 5K unit is down to $348 at Sam's. If you're a member of Sam's Club you'll pay $348, but if you're not a member you can still buy with a 10% mark up (so ~$382.80).
Lots of 2-in-1 portables bend and fold, but "detach" is a whole different story. This HP Spectre x2 2-in-1 Touch refurb is cheapest ever today at Daily Steals. You also get Verizon 4G LTE compatibility built in so you're never disconnected - if you so desire.
I went over to HP to see what price I could get this same ProBook 430 G3 for and was astounded. Directly from HP a ProBook 430 G3 with these specs will run you $989.28! Today at B&H Photo a mere $349. Excellent specs for the price with a Core i3 CPU, 8GB RAM, and 128GB fast booting SSD.
Excellent price on this quick-ship ready made HP Pavilion 15-au151nr laptop at HP this week. Unlike most of HP's laptops, this one is not customizable but is much cheaper than the customizable version with better specs.
The best 16GB RAM deal out there right now is this GeIL EVO Potenza 2x8GB. Generally an $85+ purchase getting a coupon discount to $73 this week. Savings end after Thursday 12/8 or until they sell out.