Except that they are constantly changing the basket to be a basket of cheaper goods. It's pretty bold to be so open about it, but that's what they do - it's manipulated.
Your "except" creates anticipation for disagreement, but you seem to be agreeing with me aside from the claim about manipulation. I didn't say it was accurate.
You should provide evidences for your claim — What have been changed, over how long period, and how are they cheaper goods compared to what they used to be?