转一个Google WiFi 信号扩大器

从costco （链接 https://www.costco.com/Google-Wifi-Dual-Band-Mesh-Wi-Fi-System%2c-4-Pack.product.100406436.html）买的，一共四个，家里用了三个，还剩一个。现在$72+shipping转。亲测效果非常好，亚马逊同类best seller，3-pack还要$260 plus tax （链接 https://www.amazon.com/Google-WiFi-system-3-Pack-replacement/dp/B01MAW2294/ref=sr_1_3?keywords=google+wifi&qid=1570734217&sr=8-3），costco上4-pack $299 plus tax.
Chase quickpay或者paypal。 谢谢！