In 2019, I am going to replace the gateway node with an eero Pro.
eero Beacon usual price is US$149 (S$199). But on 27th December 2017, they had a sale where it was discounted to US$99 (S$132) with the discount code BEACON99.
Shipping within the US is free, and hence I sent it to my favorite fright forwarder, HopShopGo, and get them to ship to Singapore for me.
eero is a home wi-fi system that is based on wireless mesh network (WMN). Accordingly to Wikipedia, A wireless mesh network (WMN) is a communications network made up of radio nodes organized in a mesh topology. It is also a form of wireless ad hoc network.