As I've said in another Board, if you are already suscribed with Vonage, you should check if they'll RAISE THE RATE of your plan:
The Classic "ÜNLIMITED" (up to 5,000 minutes/month in reality) plan was $24.99 + taxes/fees per month is now $34.99 + taxes / fees per month...
The LIMITED plan (500 minutes/month) was $14.99 + taxes / fees, now is $17.99 + taxes / fees per month.
If you're already paying into the former $14.99 or 24.99 rates you'll have to check with Vonage's CSR's if they'll raise the rate of your actual plan. The only option to keep the $24.99 rate MIGHT (have to be verified) be changing to the new plan...
If you do a lot of international calls from USA it might be beneficial to switch plans if the country and the phone you're calling is within the ones included with the monthly rate...