These yarn brands have been discontinued. Are they no longer made, or is there any stock available? You can still read about the yarns to refresh yourself on what they were.
Sisu Discontinued Colours - Art of Yarn
Looking for discontinued yarn - Buy/Sell/Swap - KnittingHelp Forum Community
100% superfine alpaca, 100g, ~215 yds
Discontinued Yarn on Sale
Discontinued Yarn, or Why I've Added to My Stash Recently – Threadpanda
Yarn Clearance: Sale Yarns, Discount Yarns and Closeout Yarns at Fabulous Yarn
Specials - On Sale - Ancient Arts Yarns
Bernat Blanket Yarn (300g/10.5oz) - Discontinued Shades
BIG Yarn - Discontinued – Lion Brand Yarn
Specials - On Sale - Ancient Arts Yarns
3 Clever Ways to Find Discontinued Yarn - ZenYarnGarden.co
Discover the Transformation of Bernat Happy Holidays Yarn
Bonfire on the Beach Colorway – Dancing Leaf Farm