Question: bdo who sells empty bottle?
Answer: You can buy Empty Bottle from the following NPCs:
Sady in Olvia 50. NPC Balenos Material Vendor Sady. Material Vendor. <Olvia Material Vendor> Sady. Olvia. Balenos. ... 
Zaaira in Velia 50. NPC Balenos Material Vendor Zaaira. Material Vendor. <Velia Material Vendor> Zaaira. Velia. Balenos.