I've noticed the same thing. Went to Costco recently and all they had was this "new" Clorox with "Cloromax Technology". Sam's is beginning to stock it too. Looks like the warehouse clubs have no choice as it appears to be all Clorox's doing. The Clorox web site no longer lists the Performance bleach. This "Cloromax Technology" is nothing more than marketing gobbledygook designed to divert your attention from the ingredients label where the truth lies...the amount of the active ingredient - sodium hypochlorite - has been reduced from 8.25% to 6%. If that weren't enough, they actually hiked the price! The 8.25% Performance bleach was $9.39 for the warehouse club 3-pack of 121 oz bottles. Now they are selling the lower-strength Cloromax 3-pack of 121 oz bottles for $9.99. What a deal! A corporation with a conscience (not)! When you look at it from a cost per ppm basis, using the warehouse club 3-pack as the basis, this results in a 46% price hike!
Interestingly, a few years back, Clorox went to the 8.25% concentration so they could package it in smaller 121 oz bottles vs the old 6% in 182 oz bottles. Their reasoning was that it would save on transportation costs and reduce the amount of bottle waste. With that change, the cost per ppm was only slightly higher vs. the old 6% / 182 oz packaging, but at least you had a more concentrated package that took up less space. However, the recent "Cloromax" change is nothing more than legalized extortion.
Although the Performance bleach appears to being phased out, their web site still lists the Concentrated Germicidal bleach which appears to be 8.3% sodium hypochlorite in a 121 oz bottle. Home Depot and Lowe's carry this product, but not in a 3-pack. As a result, buying each bottle individually will cost substantially more. Buying 3 bottles of the Concentrated Germicidal bleach will cost $13.17 vs. $9.39 for the 3-pack of the 8.25% performance bleach (when it was available).
Actually, a better response is to give store brands and other companies bleach products a second look. That's what I plan to do. If all of us boycott Clorox bleach products - and perhaps extend it to all of their products - then perhaps they will get the only message that they will understand...a hit to their bottom line. This is what it will take, folks. But enough of us have to do it!
I noticed a similar issue involving the 16.4 oz single-use propane canisters and any product that contains petroleum distillates (e.g., kerosene, mineral spirits, paint thinners). These products spiked overnight when oil shot up back in 2008-09. Since then, oil prices have fallen dramatically but the prices of these products remain at the same high levels they were when oil was around $140 per barrel (today, it's hovering around $46 a barrel for WTI crude). However, propane at the refill stations has dropped in accordance with lower oil prices. Therefore, I no longer use the 16.4 oz canisters and instead invest in standard 20 lb. refillable propane tanks where I can get propane at current market prices. I also will not buy any product that cannot be adapted to use 20 lb. tanks or larger. As for kerosene, I no longer use it to heat the garage and the old farmhouse that I frequent several times a year. Now it's either electric or natural gas for the garage and propane in refillable tanks for the farmhouse.