Liam Quigley REPORTER Starting in 2014, I logged every slice of pizza I ate in New York City on the Instagram account NYC Slice . The results shown below are collected from 464 slices. Over an eight-year period the average price of a plain slice increased from $2.52 to $3.00. This calculation excludes dollar slices. The most expensive was a $6.53 pepperoni slice at Artichoke Basille’s Pizza’s Times Square location, and it was fine. I did not rate the slices to avoid controversy and bribes. The biggest thing I have noticed is the decline in the amount of sauce put on slices. I’m sure this is a cost-saving measure, but the overall quality of your average slice in the city has definitely suffered. However, in no particular order, these are some of the better slices in the city. Margherita Pizza, 163-04 Jamaica Avenue, $3.50 (up from $3.00 in 2014) Ozone Pizzeria, 9615...