They are not the same. This comes up constantly in reviews, and buyers who tried cheap bulk alternatives are always the most emphatic.
“Don’t be fooled by similar Chinese multi-packs. I bought one initially and half the units were dead in a month. This is more — but you get what you pay for.”
The turbine motor, build quality (PETG + carbon fiber), universal battery compatibility, and the priority support + automatic replacement on Pro Packs are genuinely different. That’s also why shops buy 3, 4, and 5 units instead of gambling on a cheap pallet.