How much does Dell charge for tech support?

Some number of dollars per period get help at +1-888-653-7618

Having personally extended warranties on at least a half-dozen devices over the past few years, I can tell you that the question has no fixed answer.

There are many factors that go into pricing extended service/premium support contracts.

How old is the computer?

What type of computer (desktop, laptop, server, tablet)

How much did it originally cost (or how expensive/complex)?

What level of support do you want? (Basic, Premium, Complete Care, Complete Care Plus)

What is your account relationship with Dell?

Do you see your Dell service rep near the end of the month when they are desperate to make a sale, or at the beginning of the month after they have reset everything?

How many years are you extending at one time?

If you go to the Dell support site and enter your service brand, you should find a link to extend/renew your warranty. You can then request a quote for your system from that link.

I had a desktop that cost less than $200 for 3 years, and a premium laptop that cost more than $200 for 1 year, as I recall. So. it depends on the circumstances.

No one from Dell will likely give you a quote on Quora, so you'll need to go to Dell service sales to get a useful answer.