Nah, all purchases from Google Play would have similar price, with added tax by your country, i.e. if your country ask for 50% tax from Google, you will have to pay $99 for Google + $49.5 that Google will pay tax for your country.
Why you see "Asian pay half" ? It's not Asia, China is Asia, but not whole Asia, only Chinese pay half, all other Asians pay same as European & American (not including tax). Why Chinese pay half ? Because people in China have several Chinese's Android play stores other than Google Play, when they use local play stores, they can pay in local way, with local price, and that is why they can buy $100 item cheaper than Google play.