Entrepreneur

So im just trying to vent as im frustrated. My buisiness partner (also my wife) like to charge as much as humanly possible, to much i think. We started selling one product where she would always want to way over charge and it was a constant fight as i believed we charged fairly. Now we are selling a speciallty coffee, hand made components and all that. We originally charged $4 for 1 pot of premeasured coffee mix and she started telling our sales potential it was $5. Ok so i was fine. Now she was playing with our e-commerce pages and charged $7 per pot and she said thats fine. Im frustrated because she has this attitude of overcharging because she wants all the money, not trying to get brand recognition first then slowly raising or even be happy making what we are making. Im frustrated because no matter what buisiness we try doing she wants to charge double the top dollar because she wants all the money and it leads to arguing