If you look at the schematic downloadable on the ISE web page, you'll see that this is basically two 470uf caps in parallel, for a total of 940uf. That's not enough to keep a motor running across dirty track, but certainly enough to avoid sound dropouts. It's about twice as much as I usually use in a hood diesel (I usually put in two 220uf caps, for 440uf total).
This is a nice package. While the $19 price is higher than what you can buy bare caps for, it is certainly justified by the packaging, including the nice circuit board and protection (diode/resistor) components.
John C.