$15 shipped - http://slickdeals.net/newsearch.php?forumchoice%5B%5D=9&...

Based on this (see: 1saleaday), this item got excessed/liquidated by a distributor last... fall probably. Judging by the low ratings/views on Slickdeals most people just aren't interested in such a device, even at $20/pc. Several players (maker/distributor/liquidator) probably took losses unless they were on consignment.

Judging from the initial response on HN, this item totally could've been remarketed better. :)