Wall texture

[Amy Efland]

I'm in process of doing our first flip. Its a 1952 ranch and we need to re-texturize the walls. I don't think the walls have ever been re-texturized and we are replacing some of the drywall. The drywall contractor said that he would recommend getting a skim coat prior to re-texturizing but its an additional $2000. He said if I don't I won't get as good of a result. Any advice, is a skim coat worth it?