The A Riser can make these length bows with the three lengths of limbs...
#1 Limbs - 56" bow
#2 Limbs - 58" bow
#3 Limbs - 60" bow
Just checked sales over the past few months and see most are very high, far more than I think is reasonable.
I'm used to seeing a Mag A sell for between $150 and $250. The low end for well used but not beat up and the high end for very good to excellent.
I'm not a Bear Mag collector and only have one Mag A handle just for people who visit and want to try to shoot a few arrows. I actually paid less than $50 for the one I have, which was in very poor condition when I bought it. It was so bad that it looked like it wasn't worth 50 cents. A friend of mine who likes Bear Mags & is LH, had it stripped and refinished by a local paint guy in his town who charged only $35. My friend even gave me a new RH grip as he had no use for a RH grip he had laying around. I never even had to pay postage as we crossed paths when it was handed off and picked up. I have less than $100 in the whole project and it looks almost like new except for some wear on the strike plate and shelf and a some discoloration on the latches that I have never tried to clean up (one of thousands of yet unfinished little bow projects around here). Point is if you don't want to pay a lot of money and don't care about not original finish, you can probably find a fixer upper if you look around.
I have accumulated several pairs of TD limbs over the years. Many I have used on original wood handles on and off for many years so finding a set of limbs for the situation is usually never a problem. Remember seeing an A, B, and C Mag handle and two pairs of limbs on the trade blanket at our Nebraska Traditional Archers Rendezvous last August that were reasonable. But did not have a use for any of them. It was a popular bow in its day, so there should still be lots of them around to find.