The initial 13a visa is a temporary visa good for 1 year. A couple of months before the 13a Temporary visa expires the BI recommends applying for the 13a Permenant visa a couple of months before the old one expires.
The 13a permanent visa never expires however the ACR-I card needs to be renewed every 5 years.
I think it cost me about P11,000 when I did my first (probationary) application. Plus the express fee. Plus the bus to Cebu. Plus the hotel in Cebu.
When converting to permanent earlier this year I had an agency do it all for me. Total cost about P30,000, no trips needed. Well worth it.
The SSRV does not expire, you used to be able to renew the ID card for three years at a time but now it must be renewed annually. It say on visa in passport duration is indefinite.