Crafting Shop

The Crafting Shop is a Special Facility that gives you .
Every 600 Turns	1 Jewel
 Break-down
Here's a break-down of what you get:
#There are 2880 turns in a day.
#You get 43 Journey Tickets in a day. That equates to 860 more turns (1075 for people with the Corrupt Dungeon Adventurers Association )
#That's about 6.2gems a day.
Conclusion: It's not a lot of gems, but once you have a larger town level(7+), you have some extra space for Special Facilities. There's really no harm in keeping the building, free gems just for playing.