Picked up a set of the older style blue ones for ~30 each (30/top and 30/bibs) on black Friday last year 2015. Have used them in plenty of foul weather trips and they kept me dry and warm. Not nearly as nice as the BPS 100mph stuff but they'll get the job done. I picked them up to keep a spare set and have ended up using them pretty often because I am not too concerned if I mess them up.
Female drivers = No survivors