For anyone who is considering an account status change, what follows is intended to help make your decision an informed one. All prices are USD.

Subscription, Preferred, Free-to-Play feature comparisons
http://www.swtor.com/free/features (looks like this page was removed - that didn't take long)

SWTOR Expansion to Free-to-Play Option - Frequently Asked Questions
http://www.swtor.com/support/helpcenter/6449

Subscription Options

• $14.99 for 30 Days (recurring @ $14.99 per month)
• $41.97 for 90 Days (recurring @ $13.99 per month)
• $77.94 for 180 Days (recurring @ $12.99 per month)
• $29.99 for 60 Days (non-recurring)

Cartel Coin Purchase Costs

• $4.99 for 450cc
• $9.99 for 1050cc
• $19.99 for 2400cc
• $39.99 for 5500cc
• $99.99 for 14500cc

Escrow Transfer Costs (available in the Cartel Market)

• 40cc per 50K Escrow transfer
• 80cc per 150K Escrow transfer
• 240cc per 600K Escrow transfer
• Maximum credits allowed in escrow ≈ 4 billion (unofficial)

All 7-day passes cost 240cc each.

Thank you to all who contributed. Cheers!