@Paul
Though I’ve worked with buy lists as a consumer I haven’t been in the position of needing to build a one for a shop yet so I’d be curious to see the A-E system guidelines in order to match it up with something that is strictly numerical. I’m still toying with the formulas and equations a bit, but my next article will be primarily focused on this new way of rating a card.
When I was maintaining a buy list for my store we used an A-E system for demand as part of a risk curve. "A" cards were the most liquid so often we had to pay more for them, and we rarely bought anything under a "C". I'm tempted to pull out the old guidelines and see if there is a corresponding DV that would make sense with that model.
I guess I'm looking at demand as desire for the card without looking at the price which is actually just liquidity. Saying everyone wants Jace isn't the same thing as everyone wants Jace, but those with $60 proved it.
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