So... about 10 vacuums.
I was pricing one of those Dyson stick vacuums just the other day because I need a little bit of portability with power... but those things are like $500+
Hubby bought one for Christmas directly from Dyson (yes, right around $500), and it is very handy. I love it. We have mostly wood floors with some carpeted areas. It’s been great and much lighter than dragging around a bigger vacuum, so we are cleaning more frequently. No need for a plug either, and that’s been great, too. It’s been great on the cat fur.