Small Carrera cars are a good way to get into the hobby. The first track I started with was a track from Hobby Lobby that I used the 40% coupon on. If you aren’t familiar with the Hobby Lobby coupons download the app for the store on your smart phone. Once you have the app look for the coupons section. You can only use the coupon on one item.
This Mercedes I got on EBay brand new for around $15. The Hobby Lobby stores in my area don’t carry these cars individually anymore. It was a brand new car sold by user power_hobby.
I run these 1/43 cars on my Scalextric 1/32 track. Due to their small size I can get these cars up to full speed on the straights. To get them to work I had to shave the both sides of the guide so it would fit in the slot.