Buying deluxe toolboxes when full inventory places them inside bags
 

When buying deluxe toolboxes with a full inventory it places the newly bought toolboxes inside of a bag instead of saying my inventory is full.

I tested this with a inventory full of bags. It gives the message..
"Your inventory appears full! How can you buy more?"

--off topic--
I just learned he sells mana batteries. <3 the trip was worth it!