It's fine. It's pretty easy to get the chests, there's various ways to get them, and there's technically no weekly limit on how many you get (the limit your wallet sets might be another story, however).
I've yet to actually purchase any Silver, but I [b][i][u]might[/u][/i][/b] toss in $10 to try and get the Taken armor a little quicker. I [i]really[/i] like it, even if it's only just reskinned PoE armor.
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AND you get a taken shiver emote if you get ALL of the taken set