That's right folks. For on 60 marks, you can buy a chest piece from the cryptarch. If you're hunting for Twilight Garrison just like me, then you should be buying these as much as you can since we don't really need marks nowadays for anything.
Happy grinding and farming!
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With my luck it would turn into a Crest, just like the only two chest exotics i've had drop since TG and Tarantella became available.