Thinking of ditching the Mirage. Other options, or, maybe some tech advice?

[nickels]

So, a Mirage with AC costs 50% more than one without, and these cars are NOT worth $15000 or their equivalent used prices.

Dealer wants my right leg to install AC.

Car cannot be driven in winter without AC.

Is there a simple option I'm missing here? I cant keep squeegeeing the ****ing windshield while driving...