Like I said earlier, none are available yet (that I can find at least). Probably in some overseas container waiting to be offloaded, least the Ego, which is made and assembled in China. Looks to me like Lowes will sell the Ego and Home Despot and ACE will sell the Ryobi, not your local mower shop but I bet if there is a warranty issue, your local mower shop will get to do the dirty work as Neither Home Despot nor Lowes can 'fix' anything. sell it, certainly, repair it, no way. Tractor Supply is also good for that. ACE may be able to repair, I say may. Not sure on that score either. Look at the John Deere badged lawn tractors at Lowes for the examples of incompetent or nonexistent repair.
Not sure if there would be much of a warranty issue that would be repairable anyway. More like replacement of failed parts with new ones. I bet everything is modular anyway.
Like I said, not fond of the Ryobi twin cut system that would force you to buy replacement blades from them. I much prefer a single blade because I replace them yearly. I never sharpen them. Cheaper to replace. Besides the old tempered steel blades make excellent hunting knife stock.
I do like the Ryobi joy stick controls much better than lap bars (Ego). I have lap bars on the Cub M60 tank I now have and will be sold (already have a buyer for it)...