Heres a breakdown for importing 95 auction grade 4 GTST 6 months ago.
FOB 7214 (car + getting on boat)
PRESTIGE 1100 (Geoffs fee)
TT FEE 20 (Telegraphic Transfer Fee for FOB)
MACCUSTOMS 4015 (Customs agent, shipping, insurance, customs clearance)
COMPLIANCE 4609 (To ADR's)
REGO 488
CTP 357
17803 AUD
Basically, adding $10k to the FOB cost. IE u will pay $ 28k to get that GTT on the road not including insurance (i pay $2k), alarms for some insurance companies $400 etc
If shipping is included - $2k. But your $18k is prob only FOB.
It adds up very fast. Still probably did better than if i bought local.
+ for a GTT u may pay more for compliance as not many RAWS do them yet.