Ryobi high capacity 4 amp battery 2 pack for $50 (YMMV)

Ryobi 18-Volt ONE+ Lithium-Ion High Capacity Lithium+ Battery Pack 4.0Ah (2-Pack)
https://www.homedepot.com/p/Ryobi…/204321540
just picked up a package of 2 for $50 at clearance section at Union City HD store in CA bayarea, at least 10 available, lowest I have seen.