Recommend a USB Wall Charger QC 3. Cheapest

HI
I have a Xiaomi power bank 2s. brought a Blitzwolf BW-s6 and it worked amazingly that it charged really quick. however lost it.
Pls Recommend Me a USB Wall Charger QC 3. CHEAPEST if possible (BW-s6 is selling for too much atm)
thx