I'd never buy a camera of any make that looked like that. It has high mileage indeed.
I got this super nice M2 for $750 and it was CLA'd by DAG three years before I bought it. A great deal to me.
OK to above, you purchased your gear at going price ( or even slightly less) for good condition. I don't think OP has something to do with it.
Here is Winogrand's M4 thread. Everybody giggling about camera condition, but nobody making statements what camera will fall apart soon just because it looks used. Some of us knew what Winogrand used to have two M4 and cameras were serviced regularly.
The only thing we have from OP is externally worn M6 with leatherette taken from grandpa old jacket. We don't know the asking price and we don't know what camera actually does.
I purchased my M4-2 as "user". It wasn't perfect outside, but fully working inside and still works without CLA (but it was checked if CLA was needed after purchase and one year ago).
We don't know OP M6 history. It could be serviced regularly due to the obvious need to be used or it could be very cheap and here is no problem to get it serviced. Both scenarios are very common in Leica world.