My city installed a bunch of them and promptly removed most of them when DHS started using them last year
The only ones I still see are on 2 intersections where crashes happen very often, so I guess they have some "real" purpose. As soon as you cross into the next cities there's almost one per intersection, I hope they remove them as well
Looking at my nearest Costco vs Walmart prices
Ribeye choice:
Costco $15.99 / lb
Walmart $23.47 / lb
Ribeye prime
Costco $20.99 / lb
Walmart $27.98 / lb