Depends on how they print it. About five years ago I was involved with an art magazine, oversized and full color, each issue cost about $24 (to the buyer, not to print), per issue and it was of very high quality offset printing. Contributors were paid. It was made (so far as I know) with no intention of making a profit though, just as an outlet for artists and a way to get new talent a paid gig. $42 sounds high, but if they're wanting to make an actual profit with a quality product, that might very well be what they have to charge.