Really good price given the specs. Nearly breaks even with the cost of building your own right now (especially given the inflated 570 prices). No idea on the quality of the build though, this is a new product from Dell.
There's also this one which has better specs for $1599: R7 1700X, RX 580 8GB, 8GB 2400 DDR4, 256GB SSD + 1TB HDD
Be better with a 1600 normal, not the X
2x the disk size on the SSD and a better video card.