Since prices vary, and i don't know anything about you, I'd suggest you call the location or use their website to book a seat during the time. You don't have to go through with it. This will give you the correct pricing.
Most showings after 12:00 are full price. However, you might get a discount as a senior or military.
I use the fandango site for all my info for Pkwy plaza movie theater. Prices change depending on movie and what theater and the time. They don't honor all matinee prices on certain "high profile" movie's and in IMAX and 3D. If your looking for a cheap movie then go to Grossmont mall, that theater is $8.50 for all movies and times.
I use the Regal app. to find out the times and prices of the I want to see. 3D, Imax or standard.
Thanks! Your answer is awaiting moderation.