So long as it’s all additive free, no scents or technologies or splash less, it’s all the same but at different strengths. The poolmath app has a bleach calculator to enter the strength and cost to compare the best deals you find.
Typically, HDX chlorinating liquid at Home Depot and Pool essentials liquid shock and Walmart and Lowe’s are good buys at 10%. The pool store may or may not have a good price for their 12%. Everywhere else is hit or miss.
Menards, pinch a penny, hardware store, ocean state job lot, etc.