Today only, Meh offers the Ecovacs Slim Neo Robot Vacuum Cleaner for $94 with $5 for shipping. That's $41 under our Black Friday mention and the best deal we've ever seen. (It's the lowest price we could find now by $42.) It can be controlled via your smartphone and features a navigation system and anti-collision sensors.
Frugal isn't smart if you put off replacing these things. Waiting too long can cost money or even endanger your health.