Does this type of deal go down?

[mintacular]

I was wondering where some of the big sellers get all their vintage inventory. One possibility of course is that those well-financed simply overwhelm their poorer and/or less Knowledgeable counterparts....So, are there dealers (such as 707) that roam shows with a wad of cash and start making big offers on whole tables/collections? Does this strategy work? I would think some smaller dealers might consider a "buyout" if the # offered wasn't too low ball--assuming she has hung onto the same inventory for too long and/or want a "fresh start" etc.

My other question is for those who set up at shows: Do you even know exactly what your inventory is worth? Would it be hard to know if someone came up and said "I'll buy all these cards for 11K..." and how would you handle this blind-sided approach? Any type of stories about this wheeling & dealing would be interesting fodder, at least for me anyway...