So you have finally decided to buy the best ergonomic office chair after doing the thorough research on the web. Buying the best chair from the online stores can be very much beneficial for you and your office. There are many things that you must have to keep in mind while buying the chairs. When you are buying the chair from the online stores you must ensure that the store is having the facility of replacement or refunding. Also make sure that the online store is legally issued with the license.