hi, not sure if this is the right place to ask, but did anyone buy apps from windows store?

currently i set my region to US and thus i can see those promotional discount that they are having..some apps are as cheap as USD 0.10...
i'm planning to buy, but when i link my current MS account to paypal, it would prompt me to key in a billing address, which the country is United States...
i cant change the country...so, would it be an issue if i just put in any US address, like MS HQ address?