This is on sale today on Amazon Prime Day for $140, looks OK to me if you don't already have one. I don't think I'd pay $200 (would rather get Auricom's DeWalt with inflator, and I think it has radio too?) but considering basic dust busters are getting more and more expensive, this seems like something that fills the space between dust buster and canister with 20V battery.
https://www.amazon.com/BLACK-DECKER-.../dp/B07WD6S4QR