Stove Purchased by Mistake

Hello, someone posted on a website about selling a new stove. I really liked the design, so I wanted to buy it. My husband went to buy it, but it turned out it wasn't the same as the picture, a completely different design. My husband didn't know it wasn't the same, so he opened the box and placed the stove in its spot in the kitchen. I came home and saw it wasn't the same, and I wasn't willing to pay that price for this stove. I told the seller it wasn't the same as what she posted, and she said she was willing to lower the price to 300 shekels. I told her I wouldn't buy such a thing for 300 shekels, so she should lower it more or take it back. She said someone else is willing to buy it for 350 shekels, and it's not worth the 50 shekel loss for her, so she's not willing to lower it now. She asked me to check the size exactly, and when I got back to her, she said it doesn't fit them, so she's willing to refund me 50 shekels. I said she should take it back even though it's already open because she wants to cancel the sale since someone else is willing to buy it for more money, and I don't want it. She says she didn't clearly agree if they are taking it or not. From my perspective, it was settled that someone else would take it. What should be done?

Hello,

As in any dispute between two people, it is necessary to hear both sides before making a decision.

However, according to the information presented, our teacher, the Gaon, Rabbi Avraham Fried, shlita, has ruled that you have the right to cancel the transaction.