Hi!
The income you get when working as a blacksmith/carpenter/jeweler/tailor depends on your level, so higher level means more money when working at the shop. (And easier battles of course).
For now that's not ultra useful, but there are a lot of things to be added where money will be very useful :)
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 "Brain Preservation"){kind=icon}
 "Bit Warfare"){kind=icon}
 "Temple of the Four Serpents"){kind=icon}
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 "Three Goblets"){kind=icon}
 "The Town with Only You and Me"){kind=icon}
 "Idle Wizard"){kind=icon}
 "Globetrotter XL"){kind=icon}
 "Elements of Arkandia"){kind=icon}
 "Zomgies 2"){kind=icon}
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fixed. Thanks for reporting