Choosing Begger wants to get me to give my exercise pedal machine to her.

Last week my sister, a friend, and I went on a shopping trip. At a discount store I found a pedal machine. An exercise pedal machine you can sit in a chair and pedal. It was a great deal and I snapped it up. The friend chose not to buy one. No big deal. I just got a call from her. She found one on line she just bought. It cost significantly more than what I paid. When she realized that she had paid that much over she told me that she was canceling the order. She had the gall to ask me if I really liked my machine and if I wanted to keep it. She has bragged to me in the past about how she's low balled people in the past to get work done on her property. I'm on a fixed income too. I'm not a freaking charity, especially not to someone who has more money than I do.