"As I told this we need this adaptor to connect our provider fiber so I supose that we will require Gbic-LX-LC ..."
I wouldn't suppose. Different fibre optic Ethernet standards (SX, LX, LH, FX, FL, FP whatever) are not interoperable, whatever the length. Ask your ISP for a specification - although LX is most likely.
"Might be it will be less expensive to find FDDI card ? "
Gigabit Ethernet is far cheaper than FDDI ever was, as new. If you want to do things on the cheap an external transceiver might be cheaper than a Gbic. I don't understand why with a GigE link, a few hundred Euro on a transceiver would be a big deal, though.