Can not purchase master leatherworking book IV

Time: any time
Frequency: any time
World name: Sargantanas
Character name: Mr Hunt
Retainer name:--
NPC name: Scrip Exchange
Monster name: --
Class/Level: any class
Party or solo: doesn't matter
In-game time: any
Area and coordinates: Mor Dhona 22.4-6.7
Housing: --
Steps:
1. interact with npc
2. Blue Crafters' Scrip Exchange
3. Others
4. Master Leatherworker IV
5. Says I already have it and I don't

Connection Specs
- Type of internet connection/provider: Cable TWC
- Modem maker/model number: netgear AC1750

PC Specs
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Laptop Model Name: Lenovo
Laptop Model Number: Y700

Gamepad Manufacturer: Sony
Gamepad Model Name: PS4 Remote
Gamepad Part Number:

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Are you sure you haven't already bought and used it? The only non-specialist recipe it unlocks is the Griffin Leather Strap.

yes I have all of the IV books for the other classes and compared recipes and am sure I do not have it....i wouldn't have posted till i was as sure as i could be that is wasn't a brain fart lol!

You do realize that leatherwork III book has over 100 recipes, dumping leatherwork IV to the 2nd page of master (2) recipes, right?