Here are a couple of things pertinent to the topic from my 'Collectorisms' thread...
885. Phonaticism
Surging headlong into negotiation battles at card shows with your cell phone - and the vast amount of past-sales data and other effective ammunition it holds - leading the charge.
973. The Blind Leading the Deaf (derogative)
An assessment of dealers whose pricing is not only a refusal to see what cards actually sell for, but who also won’t listen no matter how much documented proof of recent sales prices is presented to them.
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