Can you buy a delivery robot?

Certainly, here's a possible description simulating the tone of a questioner: "Hey there, I was wondering something. I've been hearing a lot about these delivery robots lately and I'm curious - can you actually buy one? I mean, are they available for purchase to the general public, or are they still mostly being used by big companies for their deliveries? I'd love to have one for myself to help with some errands and deliveries around the house. Do you know if that's even possible, and if so, where could I go to look for one? Thanks for any info you can provide!