My impression (and boy do I crunch numbers) is that the PP is WAY overpriced in almost every single one of their supps. Nothing they have can’t be gotten cheaper, and most of their actives are in such small amounts they’re basically useless.
Same goes for SP in some cases, though they have published research on some of their supplements (their gastric line I believe being one).
JB’s link is great. Spending $6+ a day for mostly low dose actives is wild to me - I spent $3 max a day with a rehabbing horse on some high dose expensive things (natural E ain’t cheap).
However, the boarder and horse owner in me says don’t touch what ain’t broken - unless the client asks, I wouldn’t be messing with their program. If you want bulk tubs because that works better, they can switch to those from SP. Or if you want twist lid cups or baggies, that’s reasonable too! But I would be miffed as a client to be asked to switch to the BO’s favorite supp line or company.