From PCGS website: http://www.pcgs.com/crossover
QuoteCoin is removed from current holder and crossed over to PCGS holder; you are charged the standard grading fee + 1% Guarantee Premium
Just exactly
how they determine this
Guarantee Premium - particularly for Australian coins?
It is based on the declared value you put on the form. They won't second-guess your valuation unless you're clearly abusing the system (ie, putting a 1923 halfpenny through the sub-$300 service level or a 1930 penny through the sub-$3,000 level).