Many items intended to be fast-purchased, can’t at this moment. It’s possible to fast-buy regular musket balls and other bullets from the Arms Dealer, but not at all with arrows let alone empty bullets, which is a really handy crafting material and one you’re sure to also buy loads of.
Here’s some ammunition that often gets fast-purchased:
- Empty Bullets
- Arrows such as:
- Helfire Arrows
- Various Rockets (In fact, Cluster Rockets can’t even be bough which is a shame.)
- Cannonballs
- Solutions (although I’m really the only one who has used a clentaminator in Survival recently, to purify a couple of Plantera Arenas. Doesn’t appear on other peoples’ clients, but I’m suprised the server even saves it)
- Misc Ammo like Stakes and Styngers
Other non-ammunition items are also sometimes bought in stacks:
- Planter Boxes
- Conveyer Belts
Maybe it could also just be made the same for all items so that people wouldn’t need to spend too much time buying plenty of materials.