java.lang.NullPointerException
	at server.maps.MapleHiredMerchant.canBuy(MapleHiredMerchant.java:242)
	at server.maps.MapleHiredMerchant.buy(MapleHiredMerchant.java:278)
	at net.server.channel.handlers.PlayerInteractionHandler.handlePacket(PlayerInteractionHandler.java:712)
	at net.MapleServerHandler.messageReceived(MapleServerHandler.java:196)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain$TailFilter.messageReceived(DefaultIoFilterChain.java:997)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:641)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300(DefaultIoFilterChain.java:48)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:1114)
	at org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl.flush(ProtocolCodecFilter.java:437)
	at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:256)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:641)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1300(DefaultIoFilterChain.java:48)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:1114)
	at org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:121)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:641)
	at org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:634)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:539)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor.access$1200(AbstractPollingIoProcessor.java:68)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.process(AbstractPollingIoProcessor.java:1242)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.process(AbstractPollingIoProcessor.java:1231)
	at org.apache.mina.core.polling.AbstractPollingIoProcessor$Processor.run(AbstractPollingIoProcessor.java:683)
	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)