Theyre cheap to buy in comparison to the normal walkers. Mine $2,500 can walk up to 12 dogs comfortably, could walk more if needed. From 0-8km/hr, every notch = 375m/hr so can go from a crawl to the 8km pace.

Mate just bought a new 3 dogger cost $3,700. Stuff that i say. I like my ''over sized washing line'' as i use it to dry bedding too lol.