If you really like the drone and you got a good deal, I would figure out what you are willing to pay for a refurbished unit and then ask the seller to met that difference. For example a new drone costs about $2,000 and you believe a refurb in excellent condition goes for 85% then you might ask for $300. You would be surprised but often a refurb is *better* than a new drone and that might especially be true for the
Mavic 3 where you could be getting new "old stock units since they went EOL awhile back.
For example, and this is strictly an example, and likely doesn't apply to you: When the
Mavic 3 launched in Nov '21, it had GPS problems. If DJI ultimately found the problem and fixed it in software so all drones would work fine but quietly rolled in a new piece of hardware in Dec '22 (to make it even more reliable) that could be replaced on the refurb line, a NIB drone prior to then will have the old part A and the refurb will have part B. B is better than A. Oh and after 1 year of studying the returns, DJI could be finding out the antenna screw starts to work loose and 1% new drone buyer would have intermittent disconnect issues around month 11. On the refurb line, team members were asked to place locktite on screw C to fix this which is not in the new drone but only the refurbs. Will your new drone have a problem, most likely not. Again, these are hypothetical refurb > new.
But it shows why a *good* refurb line is sometimes better than NIB. Look at the drone you have now and decide if it's good enough for you. Even a new drone after 3 months is no better than a refurb so you really only get to enjoy it for a short period. I would take the ($300) but I realize some people love new and shiny things with stickers and zero history. For me, the reason to buy new is if you
couldn't get DJI Care Refresh fully or a warranty and ultimately if you crash in a month or two, you'll be in the same boat anyway. I have a refurb
Mavic 2 Zoom and even today, you couldn't tell it's a refurb. Negotiate.