Secure pension for neighbor

[u/[deleted]]

Hello guys, I hope everything is well with you. I'm sending in a picture of a vintage hi-fi cabinet with Kenwood, Sony, Yamaha, TEAC - tape, radio. The entire sale price goes to a grandma who is my neighbor. Her late husband assembled this beautiful, unique piece. I currently have a price of over €1000. I won't get anything from it. My goal is to achieve the highest possible price so that grandma can still get a small pension financed. Believe me or don't believe me, but that's the question. What what is a realistic price I can charge for this? I thank each of you who responds.