What i also use is a application tape that is usualy made to transfer plotter cutouts to your artwork. Usualy the visible Createx masking film i use is like 20$ for a roll of 23"x157" (60cmx400cm)
and the application tape is like 80$ for a roll of 23"x394" (60cmx100meters) . If you compare the price for 1 meter it is very much cheaper. I only use the masking film anymore if i need to able
to see my artwork under the masking. Oh and the application tape is very low tack, so there is not problem lifting up paint or when you are using it on a paper that is not so good for masking.