How should I go about this?

So basically I had carts and a battery that I don’t use anymore and the carts I had were basically full and I’d only used them 2-3 times. My friend had come over and used them and she really liked them so I gave it to her because hey, i’m never gonna use it again cause I don’t really like the feeling anymore. Now my other friend is yelling at me saying I should’ve charged her because in all it cost me 80 dollars and she’s saying I wasted my money but like honestly I don’t feel like I did because I know this friend of mine that I gave it to is actually getting good use out of it which makes me happy cause at least someone is yknow? But i’m also just not the type of person to worry ab how other people are “in debt” to me and my other friend that yelled at me is.