Question about razors and shaving?

I have an electric razor that I've had for about 2.5 years that I use maybe every 3 to 4 days to clean up the top of my lip and chin because the hair there still grows faster than the rest of my face. Then every 2 weeks or so I shave me entire face using the traditional shaving cream and razor. So far, I've just used disposable razors from like CVS, and I use each one like 3 times, so I have to buy a new pack every few months. If If I was lookinig for a more permanent razor, what brand and model would you suggest? Do I but new blades after a certain period? How long?
And for electric razors, do u have to replace the blades? Mine is a norelco phillips.

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P. S.
The age thing is a little off, Im not an adult just learning how to shave
Question about razors and shaving?
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