Bose S1 Pro WITHOUT battery, significantly lower than other current retailers I checked and approaching camelcamelcamel low of $499.
Batteries: $179 from store-dj: https://www.storedj.com.au/bose-s1-rechargeable-battery-for-…
Two of these can be put into left-right pair using the associated app.
If getting a pair and batteries use code SAVE50 at StoreDJ (spend over $300 get $50 off, spend over $99 get free standard shipping).
Friend has one of these, pretty great for parties.