Thread:RhuariIdh/@comment-27723099-20151021204332/@comment-26968019-20151028215427

And

/summon lotr.MordorOrcTrader ~ ~1 ~ {LOTRBuyTrades:[{id:17,Cost:5}],LOTRSellTrades:[{id:17,Cost:10}]}

Does not seem to want to work on single player :/