The MR90X AX6000 has dropped from the previous deal price $158.95 to $133.95 (25% off), but there is a link that says any two eligible products from TP-Link receive an extra 20% off.
This makes a whole bunch of Routers or networking equipment cheaper if bought x2, but the best discount is the MR90X, which can also run OpenWrt.
The 20% goes until December 31, but the additional 25% might not last long.
Link for items eligible for extra 20% off
https://www.amazon.com.au/promotion/psp/A3213YY2IDH6AS
Two routers?
WiFi won’t know if it’s coming or going