Although the date may be a placeholder, an Amazon representative informs us, "Pricing details come from our vendors. So that is the price that Sony gave us." Once again, Sony hasn't made any official statements about pricing, but retailers seem to be getting some details.
A recent poll on PS3 Fanboy showed that 46% of responders would pay no more than $20. Only 4% of participants would actually pay the current listed price for the peripheral.