I sell lots of office chairs and have collected a good amount of extra parts over the years. If you need some wheels for your office chair, I can help as long as they are the standard stem size (most high end chairs are all standard, but if you want to bring a current wheel we can check to confirm).
I have lightly used carpet casters available for $5 each or $10 for the matching set of 5. These were pulled off of chairs I sold when the customer upgraded to the soft rollerblade style wheels. They have lots of life in them and I don’t think there’s any advantage in getting a new set over these lightly used ones. If you ever have one break that you bought from me, I’ll replace it for free too.
I have brand new soft casters in the form of rollerblade wheels. Many swear by these whether they have hard surfaces or carpet as they are very smooth. But the reason you get these is normally to protect your tile, hardwood, glass mat, or other hard surfaces They do add about 1” of height to the chair too. I sell these for $10 each or $30 for the set of 5.
I take cash, Zelle or Venmo and am available most days from noon till 10pm. I’m located at Val vista and mckellips. I can also show you how to install them (no tools are required and should only take you about 30-60 seconds to install all of them).