Is there any advantage in pulling 10?
Solution 1:
In the current version of the game there is no advantage to pulling 10 sync pairs. They do it more as a convenience than a reward. In games like GungHo's puzzles and dragons you can only pull Rare egg machines one at a time and this is very tedious when pulling many times. Currently Dena is just making it easier to pull many pairs. They offer the same feature in the Exchange shop for pearls. You can exchange 1 or 10 at a time for the exact same equivalent price.