You have to do a lot of looking to find gems on CL. Most of the boxes of tools I see are really ratted up piles of miscellaneous junk. Or, guys that are trying to get 70 to 80% of retail for their stuff, ignoring what they've lost or broken over the years, ignoring the stuff that is obsolete, and ignoring that they got BOGO or discount deals on much of it.
Good case is a nice snap on box I looked at last week. 52" box, a lot of snap-on, a lot of blue point, some pittsburg, some other junk, a lot of miscellaneous stuff like carlyle and other house brands filling in the missing pieces. All SAE, only one set of metric wrenches and one 3/8" standard metric socket set.
The guy starts out by telling me that he figured it out, and he has invested $140,000 in the tools over the past 15 or 20 years. OKAY....... Where are you hiding them? Nice box, probably has $20,000 max retail in it if it was all Snap-on. It's maybe 1/4 snap on, 1/3 blue point, and the rest is miscellaneous and plain junk. He also tells me he paid $6500 for the box. Current retail is $5600 from Snap-On, and resale value is $1500.
Anyway, he starts out that he wants $14,000 to $18,000 for the tools and box. After a while, he's down to maybe $7000??? I told him we are too far apart to do much; he says to think about it and make him an offer after a while.
I go home and build a spreadsheet, and put in ebay prices to give a baseline for real world value. I come up with $4495 current used resale value for the tools and box. Okay, given that I end up paying 15% of total sale for ebay and paypal fees, now we're down to $3820. About 35 major sets/items, and about 35 other auctions to sell the stuff if I was to sell it all. Say 30 minutes to sort, take pictures, list, and ship the items. So, I'd have 35 hours in getting rid of it. I'd like to make $1000 for a weeks worth of work and risking that much money. So, have to buy it for about $2820 to make it even worthwhile. Now, I'd like to have some of that stuff, so I'd pay a premium to get it, and hope to sell some of the misc and junk to get it back. I'd pay $3000 to $3200 for the lot. If I was trying to make money, I'd want to buy it for $2500.
We're a long way apart.
Here's another fantasy seller; I can't believe he claims to be a retired mechanic:
http://eastoregon.craigslist.org/tls/5447150557.html
I wouldn't be wanting to try to make a living off of buying from craiglist and reselling!