Looking for a router/access point with bandwith management

Maybe someone has more information than google on this, since I only get results involving peope b*tching about their internet being slow because of their new router. >_>

So, I'm searching for an additional router or access point with bandwidth management. Additional meaning that I'll bridge the connections and use that router to connect my WiFi to instead of the actual router.

I'm looking for a cheaper one, as it just needs to manage the bandwidth from my sister's and mom's laptop. Decent signal through a wall or 3-4 within about 20-25m would be ideal, though I'm pretty sure that and cheaper doesn't go hand in hand.

Anybody has a suggestion?