This one?

This coin is minted in 2005 and still on the market. There are three types for this one. silver proof, silver proof with a red G. and this one in the picture, which is 925 silver base with gold coating - and some red color.(Galatasaray Sports Club 100th anniversary comm.)Galatasaray Logo (Red G and Yellow S) on the obverse and 100th anniversary logo on the reverse. Diam. 38,61 mm, 31,47 gr. minted 10.000. The price is 30 YTl app. 23 USD.
About my avatar coin, its 1999 Troja comm. 24 Fine gold, diam. 13,92 mm, 1,24 gr. minted 27.000 pcs.
The obverse is the classical Turkish State Mint design with issue year and nominal value, and the reverse is the Legendary Trojan Horse behind a Trojan soldier figure.It sais Living Legend Troja on top.
It's not available at the State Mint store (not since 2002). But I think a hard search could give results at collector's corners. Nominal value in 99 was app. 6 USD now my estimation is about 30-40 USD.

Regarding shipment costs, I once tried to send a book to my friend in the USA, the cargo company charged me 40 USD

I sent the book with regular mail, it costed me 10 USD. I haven't tried to send a smaller package, and have no idea about the insurance etc. Can't help wondering how the prices on e-bay are ~2 USD worldwide

I believe the rates are much different in USA.
In a couple of days I'll send a set of coins to the KidCollector, and as you mentioned, it'll be kind of a trade. Since he's in Kuwait, I dont expect such a shipment cost. I'll also have a clearer vision about the shipments overseas.
Thanks for your interest
Sir