If you just want a cheap ticket into the game, section 422 will be fine but don't expect a close feeling to the game. It will feel miles away, you won't really be able to tell which players are which and will watch the majority of the game on the jumbotron. Unfortunately, the poor man aka the "true 49ers fan" has been priced out of Levi's Stadium. But all of the seats are comfortable and each has a cup holder. Definitely an upgrade over Candlestick Park but it's a shame they didn't build the stadium in San Francisco or even Oakland.

To get to these seats, you'll want to enter Gate C and turn right. You can either take the escalator or the walking ramp all the way to the top. Section 422 is the last section on the upper level. I would suggest getting a map of the parking lot because there are ZERO signs telling you how to get where you need to go. After the game, expect to battle traffic for at least 90 minutes before getting out.
I really enjoyed the 49ers team store at Gate A. It's a little overpriced compared to what you might find at the mall but the selection they have cannot be matched.