Ever notice how commercial ice cream has so much air in it. Then look at the measurement on the front of the package and it only tells you the volume, not the weight. It seems they don’t want to let you compare just how much ice cream you are getting, with other packages.
Check the nutrition facts part of the package. It should show the weight (mass) of a single serving (and its volume, usually 1/2 cup … a tiny serving so the fat and sugar content will appear to be lower). Just compare the weight (usually in grams) of a like sized serving.