Serious help needed: A rookie finding Hot Wheels & RC Cars

Hey everyone!

I’m a complete noob to the Hot Wheels scene and need some serious help. I want to gift my boyfriend a cool Hot Wheels car, something like a Batmobile, Bugatti, or Mustang etc etc I’ve been asking around Reddit and learned that the base price for Hot Wheels in India is around 180 rupees but I’ve realized these might not be mainline releases.

I have a Hamleys store in my city, but I haven't checked it out yet. Before I go, I want to confirm:
1. Are there specific models or series I should look for? 2. Are Batmobiles, Bugattis, and Mustangs part of premium lines, and how much should I expect to pay for them? 3. Are there any other stores or websites (besides Hamleys) where I can get good deals I don’t want to overpay but also want to get something nice!

I’m also considering getting him a remote control car. I don’t need anything ultra-premium, just something that’s good quality and fun to use. What’s a reasonable budget for a decent RC car in India? Any recommendations?

I’d really appreciate any advice! I have no idea what I’m doing, and I don’t want to end up buying something overpriced or low quality. Please help!