The MSRP is $199 so it is just over half price. The deal just says limited time only, so it could go at anytime. You could also buy multiple to create a wifi mesh network.
PORTAL WIFI ROUTER
Slow WiFi is officially a thing of the past. Whether you™re gaming or streaming, Portal WiFi Router delivers a lightning-fast connection even when surrounded by your family™s or neighbors™ devices jamming up the network. You can seamlessly extend your network™s range and coverage by simply adding an additional unit”even in multi-story homes. Offical Link
At a glance
ZeroWait ZWDFS technology for lag-free gaming and streaming
Dual-band ultra-fast speed (AC2400 Wave-2)
Improved signal, reception and mesh network coverage
Highly secure and private
App for iOS and Android
iOS and Android App
4 Certified DFS FastLanes™
Multi-User MIMO for faster streaming and gaming
Connect up to 2 Portal WiFi Routers for range up to 6,000 sq. ft.