Looking for a MacBook Air, M4 or M5. Preferably 13’ and 16GB. For immediate purchase.

I am looking for a used (preferably single user) MacBook Air. Ideally a 13’ with M4 or M5 chip, with at least 16GB RAM. Willing to purchase at a short notice.
Price: No budget, but willing to pay a fair price for the respective model
Thanks in advance.