What Should I buy from the old maple store?

Late, but the 1500 Maple Flag (the one that's white with red leaf) is quite fun to have as well. It's huge and showy when you slap other players with it, falls under your IGN when standing and covers it up when you're in a store, and borks up when you equip a shield and walk because of bad layering. Untradeable and 25 coins though. Pretty fun to have around, more so than a fishing rod + tuna IMO.

Can check it out in B&story, under common 1h-swords.