The bass rig and its money value....

I rented my bass rig out again last weekend and the weekend before that. I have now gained 150$ renting it out. The total cost for all the rig was around 2000$ including cables. So it has paid for about 7.5% of itself. Also the person using it is now interested in buying it. Someone else who heard it is also interested in buying it. I discussed this with the guy who played with it. My career vision for myself would not be served well with this sale, as I see myself playing music for fun in my future ten years from now.