According to some legitimate-looking inventory sheets, Best Buy will carry anywhere from 20-70 iPhone 4Gs per store for the launch this Thursday—that's in 16GB versions. 32GB versions will be far more rare, with numbers as low as 10 per store. And, iClarified claims that while many Best Buys have ordered white iPhones, it's unclear whether or not they'll be received in time for launch. [iClarified]