it's good wifi coverage, just be aware don't update to the latest firmware, the arlo feature may cause the problem for 2.4Ghz.
The price is not cheapest, from my memory it's about somewhere around $240.
It hasn't been that price since the NZ dollar tanked. $300 is the usual price now.
I got one about a month ago to replace an old TPLink WR1043ND running Gargoyle when I upgraded to UFB. The first attempt was a WRT1900AC, which was an absolute disaster.
The R7000 is running AdvancedTomato v132 and has been basically rock solid for the last month. Constant 45-50MB/s transfer speeds to my 2x2 AC laptop.
It's also compatible with a fork of AsusWRT-Merlin called XVortex which is apparently also very stable and high-performing. I like Tomato so much I haven't felt the need to try it.