Here are some of my payment proofs from Opinion Place.
$2.25 - Opinion Place - August 27, 2013
$3.75 - Opinion Place - August 13, 2013
$3.75 - Opinion Place - June 26, 2013
$2.00 - Opinion Place - December 26, 2012
$3.00 - Opinion Place - August 22, 2012
$3.75 - Opinion Place - March 26, 2012