Let's assume I'm ignorant about Li-ion chargers. Wait I am. :-)
Why is this charger $50 and that's before adding cells and a wall wart.

http://www.parallax.com/Store/Robots/AllRobots/tabid/755/ProductID/758/List=
/0/Default.aspx

Li-ion Power Pack /Charger - 2 Cell
Price $49.99

The Li-ion Power Pack-Charger =96 2 Cell is an integrated storage cell and=
=20
charging system on a single 3=94 x 4=94 printed circuit board.
It's compatible with most 18650-size Li-ion cells.
--=20
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