YesAsia can take a while. If it still doesn't arrive by the end of Feb, maybe ask them about it.

Wait for letter from your custom office :D Although never with yesasia, but in case of other online stores often the package arrives in your country and then keeps being hold in custom office :p Once I had an extreme example of a package that got lost for a month, after visiting my post office I found out it came from Asia in just 5 days and then spend 21 in customs, lol.

I had the same situation (posted one page back) and my package just arrived a few days ago. Give it a bit more time before you contact them.
As someone already said, they really aren't the fastest guys out there when it comes to shipping.

I usually get the cd's by the 4th week after the shipmet. If not, I email them and they tell me what to do (wait 1 or 2 weeks more, wait just a bit, and confirm I didn't get) then if it didn't arrive they'll ship again a new copy.

I received yesterday the copy I ordered on the 2nd of January...and I got lucky this time, i waited even one week more for other packages. Do not worry, your package will arrive, 99% sure. They do not charge you for shipping (with the free method) but it takes a bit more... it's only normal XD