That seems inferior to many of the options discussed above if anonymity is your aim, since you are going to have to hand over a shipping address to the seller. You could of course ship to a PO Box or similar without your name attached, but if you don't already have one of those then there is an additional cost as well as time and effort required to set one up, and it might be impossible to ship to an anonymous PO Box internationally. Most of these coins also sell for higher than the value of the bitcoin contained within, so again, you'll be paying an additional cost.