Netgear WAC104 WiFi 5 $25 at Amazon

This seems like an interesting deal for $24.99:

NETGEAR Wireless Desktop Access Point (WAC104) - WiFi 5 Dual-Band AC1200 Speed | 3 x 1G Ethernet Ports | Up to 64 Devices | WPA2 Security | Desktop | MU-MIMO | Supports 3 SSIDs | 802.11ac

The wiki says it has 128MB NAND Flash and 256MB RAM:

OpenWrt Wiki page for WAC104

Only AC, but perhaps has better antennas than the WAX202.

This is a clone of the R6220 with more memory and minus the WAN port. I have/manage several of these and they perform very well. If you are looking for a simple AP, and if AC wifi is enough, this is a good choice, especially at this price.
EDIT : about wifi performance for the R6220. File transfer (LAN -> wifi intel AX200) can reach 40 MB/s which is much satisfactory for such hardware.