I think around here the dollar amount has a lot to do with how a debt is considered.
If its got a serial number, can be identified, and there's a signed contract, then its deemed as collateral. Small items, regardless of the compiled total aren't tracked that way.
I have seen dealers come into a shop and haul away complete tool boxes over an outstanding tool truck debt, but I think if anyone really took it to court, the dealer would lose. Most shop owners would hand over your stuff in a heartbeat to the tool guy if your not there. I've never had to worry about that because I've always paid cash.
I did have some idiot dealer come in one day who took over for a guy who retired, who insisted that my one tool box was his. The box was 30 years old, from the early 70's. I had bought it from a SO dealer 10 years prior who took it in trade. He swore up and down that in his 'first' stint as a SO dealer years ago he had sold that box and the guy skipped town. He told me I owed him $1200. I told the guy to pound sand, take a hike.
No one in the shop would deal with him. I had a SO receipt for cash from another dealer. I had bought the box cheap to use as a shop cart, an old KR-396. I knew the box's history, it belonged to a former boss of mine, he traded it in, a guy at the tire shop down the road had bought it and used it for a few years, and traded it in to the same dealer. I bought it for cheap and repainted it. The stamp on the back of the box was vague, mostly filled with paint. This new dealer thought he was going to take a scraper to it so he could read the numbers. I'm not even sure the thing had a 'serial number' there.
The box wasn't likely his, it came from a different area, he couldn't give me the name of the guy who he sold it too and didn't know the dealer I bought it from or the two owners I knew before me. He didn't last but a few months, he just stopped showing up. We were without a SO dealer for several years after that.
What got me was that there was another dealer who's territory stopped not a half mile down the street who couldn't stop at that shop and really didn't want us meeting him at any of his stops down the road.
At the next place I worked, a large car dealer, we had a Cornwall guy come in one day, he sold a half dozen new boxes and a ton of stuff to a bunch of the younger guys. Then he never showed back up. Guys didn't know what to do or how to pay because the guy had put it all on a truck account. 6 years later a different CW guy shows up looking to collect on those debts. Most of those guys were long gone, the one or two that weren't had all but forgotten about it. The owner threw the dealer out and no one ever heard anything about it again.
For some reason this area must be bad for dealers, there's one reliable Matco guy, and a Snap On guy in the next town who will sell from his house on the weekends. The local SO guy won't stop unless he knows hes going to sell a few hundred bucks a week or more.
I even had an SO rep tell me that they won't warranty anything I bought from a different dealer unless I have a receipt for it proving I bought it new. He refused to replace a dried out and cracked orange dead blow hammer. A dealer I passed along the highway one day out of state did replace it with no questions though. I now have 11 others that have fallen apart the same way. I bought them all new in the mid 90's or so.
None of the local dealers will order or replace them, one did try to make me a bargain saying that if I bought something 'big' off him he'd see about getting my hammers replaced. (I likely have more Snap On tools here than most dealers, some of it I bought new, some I inherited or bought used but I've spend tens of thousands of dollars with SO over the years).
I think most of he problem these days is that dealers are short on cash themselves and they can't order things for guys. I've often tried to get local guys to order me something only to be told to go online and buy it. If that's the deal these days, what's the sense in dealing with them in the first place. The whole benefit of buying SO is that you have a weekly dealer to service your tools. If that's gone, I see no benefit in buying their tools. It seems its either too old, we don't make it anymore, or you need a receipt, or "SO don't warranty those anymore".