I think the only item I've ever bought for myself off a Snap-On truck was a 10mm six-point short 3/8 drive socket. Looked at all the usual places, none had it. I was happy when the tool truck guy who came around my place of work (I worked in the office, not the shop) said he'd bring one the next week. I was sad when that single socket smaller than the first segment of my middle finger was $13. I still needed to service that bolt, so he got the $13 and not the middle finger.
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Not another dime.
--Jason--