What on earth are you going to do with 100 +RW discs?
Price sounds about right.
Got a spindle of 25 RiData +RWs (should be W11) from Amazon several months (come to think of it, getting close to half a year) ago for a little more than 50 cents/disc. Nice quality. And I've used less than half the spindle so far despite having gotten them so long ago.