I just switched from ON to TN as you know Giant. You are correct. I basically got the isolate for a couple bucks per pound more then the ON whey.
You can't lose with TN, I'll be using them exclusively going forward.
the last protein I bought in a store was ON hydro whey, the platinum one, like40 bucks for less then 2lbs.
to me the quality of that was ok ish, but not quite as good or similar to good whey iso which is about 8 bucks and lb unflavored...
I haven't seen prices in years but you should be able to get same or better quality form TN for much less then you are paying in the store, prior to shipping at least...