Please help me find shoes for a friend!

Hi yall, Not really on reddit much and not much of a sneaker head myself but one of my closest friends is. A few years ago one of his pairs of kobes got stolen and I want to get him a new pair.

I want to get him kobe 11s. High tops in a purple and yellow or similar bright colorway (I think that's how you use that word lol). Im seeing a large range of prices online from 150-500+.

So, im hoping someone here can tell me what price I should expect for a real pair and what are some reputable websites to buy from. I don't want to get scammed. Thank yall so much for any help 🙏 🧡