u/Hot-Possibility-7283

Wondering if anyone can advise.

I drive a 2018 Polo vivo. Lately I've been struggling to demist my windscreen with the heater (it just adds to the problem and makes it worse). Now I can actually see actual moisture coming out of the vents when I turn my know to the hot side.

Google tells me it's likely the heater core, and it's leaking coolant and it's getting blasted in to the car (which makes sense, because the car has been drinking coolant like an alcoholic).

Anyone know how much, in total, it will cost to fix my issue? Do I need a new heater core, or is there a less expensive, temporary fix?