No, the minimum is NOT 10 DRIP. The minimum is 1 DRIP after tax and the tax is 10%. So you could buy 1.15 DRIP and you should end up with a little over 1 DRIP after the 10% tax and network fee. This is why I recommend people just buy and deposit 2 DRIP to be safe. I have several people not eligible for airdrop because they did not account for the 10% tax.