I don’t know if this is intentional or not but the Forest Song ocarina can be bought for 1300 at Elgard and 1200 at Geat. Same thing for the Attack Signal, 2800 at Heorot and 2900 at Finan.
Probably should be changed. That doesn’t make much sense.
They only way that it could possibly make sense is if they wanted us to hunt around the different stores to find the best deals on items