58$ for two, 73$ for four.
If winglets count, it is four and seven aircraft.
Plus various carrier options resulting in different configurations of the cockpits. These options hold 20 pages in a (fictional) section of the CDU. They all can be reset
while being inflight. Don't need that HGS? Throw it out while being in flight. Prefer the Collins to the Honeywell MCP? change it while inflight. Want a different setup for various altitude anouncements? Change while inflight. No Windows menu at the top of the screen. Its all in the CDU.
The most money you already wasted when staying with the FSX default 737 for so long.