Thanks for the translation!
What a dangerous restaurant he visited. He'll be doomed if he becomes a loyal customer.
It seems like becoming an enchanter could be extremely profitable in that world. Unless creating those magic tools is also awfully expensive and troublesome, and thus the profit margin isn't as big as the product price might suggest. If the barrier cube costs 50 gold, but making it costs 45 gold in materials and takes a long time, it's not necessarily lucrative, with all the other expenses considered.