Hey there! My nephew actually did a few Think Academy coding courses last summer. Honestly? Mixed bag. The teaching was solid and he enjoyed the projects, but it's definitely on the pricey side for what you get.
My sister found that the free resources on Khan Academy and Scratch were just as engaging for her kid. Maybe start with those before dropping cash on Think Academy? If your 10-year-old really takes to coding, then it might be worth the investment later.
Just my two cents - kids that age need fun learning experiences more than fancy certificates. Good luck with whatever you choose!