4 days from Turkey to the US?
I wasnt gonna say anything but let me specify it, private courier method is new, arrives to EU in about 2-3 days, to USA and Canada in 3-4 days, to AU in 5-7 days.
I dont want the shipping method to be over-used so I dont advertise it anymore. Sometimes I shut down private courier option on web site if its overloaded. (had people asking about it here)
Depending on country we change the courier, so it may be UPS, Aramex, DHL, client can't choose(as they dont know customs risk), we choose the safest method for each country. It is simply post office's agreement with those companies, thats how we can choose the courier.
For example UPS is not successful for Australia, so we use Aramex. Same for California. So Australia and California shippings last 5-7 days because Aramex is pretty slow, but steady. Scandinavia, Australia, Canada, Italy, NZ are going through without a problem now with private courier shipping method.
Also TP Domestic Line arrives in 2-4 days
Client doesnt even make transfer to the sender or producer, has zero connection, so its the safest way for clients to get steroids domestically imo.