I bet the $2000 top $3000 does not include the cost to anchor them into the concrete sidewalk. At government employee rates it likely will add another $5000 each to the cost of deploying them.
Oh good point there. The city issues us a garbage can (the garbage trucks have these mechanical arms that pick up the cans, dump the contents into the truck, and put them back where they were. If you need a second can you have to buy it (not hugely expensive but you can’t get them at Home Depot).