Ther is no way I would pay a buck for them. I buy 3/0 stainess eagle claw Wrap the shank with invisable thread,spin on a clump of deerhair half way down the shank with the tips extending just beyond the bend, This holds the Marabou out and prevents collape, then tie in blood marabou spey style ,usually two colours sometimes three. Tie in some crystal flash at the eye ,slip on a pony bead over the eye and tie off a head. Stick metal foil eyes on the bead .
I think these flies cost me about 25 cents each.