If you have the time could you post the cost per serving, and the macros?
The thing I have noticed is that per serving PLAZMA is actually not that bad (consid also that it is 15-20% off of its listed price with discount codes), and many other (every?) brand essentially is "cheaper" but the serving is half the size.
Intra MD is $1.50/serving at the cheapest place I could find, and has 120 cals, 30g Cyclic Dextrin and 17.5g of select EAA's (note, NOT a full complement of amino acids like PLAMZA)
PLAZMA is $2.80/serving and has 210 cals, 38g Cyclic Dextrin and Isomaltulose, and 15g of Hydro Casein, Betaine, and an Electrolyte profile.
The Intra MD has a little voodoo going on with the calories because the EAA's arent counted as cals, but you can see the PLAZMA blend is a bit more substantial.
TrueNutrion custom blend is like $1.10 with hydro whey, and like $1.50 for Pepto Pro and HBCD, with an electrolyte add on. Never tried this but its one of those "home brews" people love to make.
I think the issue some people have is that they have recommended as many as 3-4 servings in the peri-workout window (1 pre, and 3 during) which would make each workout cost like $11... or almost $50 a week for a 4 day/week plan. At one serving per workout it becomes much more feasible... but results may scale down quite a bit as well.