sdandrea1 Hireko's Powerflex line looks good to this cheap bastage. They have a filament wound shaft that weighs 100g in R/S for $7. Might give those a go.
Steve, I have used the Powerflex irons shafts, both models. I haven't used them years. Perhaps QC has improved since I used them. The Powerflex 501 is a crap shoot regarding flex, spine and weight. Out of a dozen shafts at least two would be totally out of specs. I had a local dealer and would return the "outers." And in general they played a bit on the stiff side. Unless you have the equipment to weigh, spine align and flex match I would pass on those. The Powerflex 114 is a total dud. I was told by Jeff Summit that it has a 25% fiberglass content.
One shaft I tried and liked is the iDrive. A bit lighter than you are looking for at 70g but the set I built was very close in weight and flex, and inexpensive at $9.99 from VG.