3-1/2" wide jaws? Not all that big.
Most of the people on this forum are willing to pay a bit more for this sort of stuff, whether it's because it's the good stuff or just because it's old school, but the average buyer on Kijiji probably won't spend more than you can buy a new one for at CanTire on their best sale. I'd guess somewhere around $35. I'd probably list it for $30, and expect to get about $20-25 for it.
FWIW, I bought my Record for $20, and it's a bit bigger than yours. I considered it a good deal. It seems to me at least that most of the stuff posted at over $50 is wishful thinking unless it's a pretty decently large vise.
(I'd also include your location on your profile, in case any members here happen to be looking for such a vise)