No fixed location. The Phantom uses Discord to coordinate meetups. They advertise "Extra Quality" as items that are pre-enchanted with curse-breaking mechanics (e.g., Removing Curse of Vanishing via an anvil exploit). You pay, drop a chest, and they place the items. Reputation: 10/10 (but expensive—expect to pay 2x the normal rate).
Opting for extra quality kits from 9B9T Kit Shop or similar sources offers several advantages: 9b9t kit shop extra quality
Extra boxes for storage, pre-organized with supplies. Why Choose a Specialized 9b9t Kit Shop? No fixed location
I can provide specific item checklists tailored to your exact playstyle. You pay, drop a chest, and they place the items
Once you have acquired your extra quality kit, you must use it strategically. Use your Elytra immediately to fly away from in a diagonal direction to avoid the main highway scouts.