Good Place to Buy an Office Chair?

Does anyone know of any good in-person stores/showrooms to buy an office chair, brand new or secondhand/refurbished? Online suggestions are welcome too, but I'd really like to give it a try before I buy.

My current (broken) chair was fortunately free from an office clearout. Alternatively, I dont suppose anyone could refer me to an office closing down who's giving away or selling their chairs?

Any help is greatly appreciated, thank you.