I just told my Dad earlier tonight I wanted to go to Costco this weekend to look at the desktop chair section, I have browsed Microcenter chairs recently, but they are too expensive. Been looking for a few weeks now, but haven't been to my local Costco yet, I think I might get lucky there, plus they usually have models sitting out to try before buy.
Most likely will get something under $200 as long as it has good lumbar support feeling and is comfortable. I really prefer padded arm rests though. Tried one from Amazon I think, might have been walmart, but gave it to my parents after using it a few days. Moving forward 100% doing try before buy.