From my understanding, for registering SCJP, first we need purchase the exam voucher from the sun website which costs $200. Later, to schedule appointment with a Prometric test center it charges additional $300!!
Does it cost me a total for $500 for SCJP 5.0? or am I missing something here?
I am not sure where that $300 comes from. You should have gotten voucher number in your email after paid the $200. Just enter that number when you schedule at prometric website and schedule the date, that should be it.