I've seen 2 different styles in the 'yards... I know of a half dozen near me in the 'yard.... no idea what they want for the enclosure - they want $10/ea for speakers "as is" ... most plastic they sell $1 / linear foot. So I would guess about $2-$5 each enclosure no speakers. You can do a really basic test on speakers using a 1.5 AA or C cell and watch to see if the cone moves (don't use anything higher than 1.5v). A little more effort you could cobble up something to drive em with a phone or mp3 player I would think - they would be way underpowered so you couldn't tell if they were barely blown/going out, but moderate/definitely blown would show up distorted. Nothing in the u-pick-it yards near you? Would you be willing to give ~ $15+tax (8%)+"environmental fee" (like another 1%) each and then shipping from CO?
$15 is a total guess at a price. They would ask for a 1' pigtail of wire ($1), plastic enclosure ($??), and speakers ($10).... when it isn't on the price sheet they guess/make stuff up and I bet they would come up with the price of $15 ea.
And of course as is means you might be paying $15 and only the enclosure is worth anything after full testing.
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