The esimated price of 3.8b$ does include the requested amount of missles by Turkey, however the article does not say about this. For example Turkey has decided on getting 225 aim9x and its price is 96m$ (including training missles),it is included in that 3.8 b$s. As i said the requested amounts of other missiles (HARMs,AMRAAMs,SLAM-ER and other stand off ammunition) by Turkish Airforce is not listed in this article. Also i must add that this price doe NOT cover any purchase of non US weapon systems as Penguin ,Derby,Pyton 5, IRIS-T..
I guess the quantities will be clear in a few weeks when US congress decides wether to sell or not to sell this package to Turkey.