Not figuring in time, fuel to pick it up, or shipping anything, between $5 and $10 per computer if it's just scrap.
Towers with more than scrap value parts are where it varies a lot. Some of them can have $20 or $30 in components. But, I use the $5-10 price point as a starting point. For me, most yield about $7 in components. The older computers have more scrap value than the newer ones, but won't have any more than scrap value parts, while the newer ones may.
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