Next cheapest is $263, so a very good price for a solid board which should support new Ryzen CPUs and comes with 6 month warranty.
Gigabyte Remanufactured B450 AORUS PRO WIFI ATX Motherboard AMD B450 Chipset For AMD Ryzen AM4 4x DDR4 - 3200Ghz 2x M.2SATA3 USB3.1 Gen2 HDMI DVI. Wi-Fi 802.11 acBLUETOOTH 4.2. /PB 6 mths warranty EXMBDGBM33407
Wi-Fi:Yes
MB Socket:AMD AM4
Chipset:B450
Form Factor:ATX
Multi GPU Support:Crossfire / SLI
PCIE x16 Slots:1
PCIE x8 Slots:N/A
PCIE x4 Slots:1
AMD introduces the latest Ryzen™ 2000 series processors to provide the computing power for gaming need. GIGABYTE's 400-series motherboards perfectly fit the latest AMD Ryzen™ 2000 series processors' computing performance with more features and more control. Users can enjoy the benefits brought by AMD Ryzen™ 2000 series processors.
I was under the impression that even if Ryzen 3 uses AM4 slot, board manufacturers such as Asus recommends against using older boards in this instance. They may just be wanting to sell new boards however until full compatibility is reviewed/tested there may be some risk in pre purchasing boards for this purpose. All of the board manufacturers are anticipating a huge uptake of Ryzen 3 and have announced many many boards for this purpose.
Also the price difference/Pricespy is due to it being re-manufacturered (whatever that means, probably not good though).