Ours was a two person job. The You tube video says “finesse into place”. Hahahahahaha.
It also depends on if your windows
have been out for awhile. It is harder if they have been out and the shape of the opening has deformed.
IF the person charging $200 has done multiple installs, and knows how to do this exact window install, we say pay him! If someone thinks they can do it, no way. The lock strip is challenging. So much cussing!