I personally would not want to deal with BS of packaing and shipping 1 off or even small lots.
I would make a single package price for it all and local pick up.
Be reasonable and price at like 50% of value. Dont cherry pick the good stuff to sell individually, the good stuff is the bait for a buyer to take it all in 1 lump package and deal with the junk.
Make it easy on yourself. time is valuable.
Alternative is to make logical packages and make 3-5 lots.
Reality is then you will need to package and ship so factor in if the 25% additional is worth your time/effort.