That works out to something like $30-100 a month for most households. A bit disappointing for those hoping the savings on food would pay for the drug at the current drug prices.
While you might be right in what you have presented, your calculation of the total savings is not including reduced medical spending.
I mean considering most drugs don't result in any cost savings on routine household spending, that's still pretty welcome.
The cash-payer (no insurance) price of GLP-1's has fallen by about 70% since I started on them 18 months ago, from around $1100/mo to $350/mo, for brand-name non-compounded (Ozempic, Zepbound, etc). Many people also stretch that 1 month supply to last longer, as well (eg "click counting").
Not to say that it's cheap, but they are no longer the high-priced drugs only for the glitterati that you may be thinking.