Found a new source for Frixion markers : r/sewing

Frixion Fine Point 0.7mm Clicker Fabric Pen — Quilt Beginnings

How to Make an Ultra-Fine Point, Ultra-Washable Fabric Marking Pen

1 Pcs Japan Pilot Frixion Erasable Highlighter SW-FL Pastel Fluorescent Marker Pen Student Special School Supplies Stationery - AliExpress

Assortment, Pilot Pen

Pilot FriXion Colors Erasable Marker, Black (SFC-10M-B)

Pilot FriXion Fineliner Pen - Fine Point - Black

Pilot, FriXion Colors Erasable Marker Pens, Bold Point, Pack of 12, Assorted Colors : Office Products

How to Make an Ultra-Fine Point, Ultra-Washable Fabric Marking Pen

Pilot Limited Frixion Knock Erasable Glitter Gel Pen 0.4mm

1 Pcs Japan Pilot Frixion Erasable Highlighter SW-FL Pastel Fluorescent Marker Pen Student Special School Supplies Stationery - AliExpress

Pilot FRIXION Erasable Markers Unboxing & Review - DIY Craft Club

Pilot Frixion Erasable Pens Rocketbook Pilot Frixion Colors Erasable Marker - Pilot - Aliexpress

Frixion Marking Pen Erasable (Quilting - Stitchery) - 0,7mm

WIP] Using Frixion pens for gridding : r/CrossStitch