What is the process and cost for renewing the Elite Thai Visa?

If you can afford the elite visa, why not look at the LTR visa?

What package do you have at the moment? Some old packages are indeed sort of "renewable". For example, you can update your old 5-year package to 20 years.

There is no "renewal" of an Elite (Preferred Entry) Visa.

You buy the visa for the number of years your plan allows.

The visa is valid for that time, you get unlimited entries of 1 year each when you use the visa and it runs out when it runs out. (except for the last year when the Elite visa is running out and then you only get stamped in until that expiration date)

If for some reason you don't travel out of the country during a year, you can go to the immigration office with your Elite card, the required documentation and for 1900baht get a year extension of stay inked in. 🙂

You would buy a NEW package after that (which Elite usually discounts to you because you're already an elite member)