Local Siemens site does not have T39 on their pricelist. As orientation, the prices range from less than $100 for low-end A36 to some $400 for SL45 (with WAP, IrDA, modem, MP3 player, organizer....) without VAT. Those are prices in manufacturer's on-line store; I guess street prices are slightly lower.

Dragi "Bonzi" Raos
Zagreb, Croatia
Q#5196, MkII#80000376, 18GB green
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Dragi "Bonzi" Raos Q#5196 MkII #080000376, 18GB green MkIIa #040103247, 60GB blue