Description from YouTube
The Britomart Sampler is available as a full kit with chart, or fully kitted class at katie-strachan.com/shop

Chart only: a PDF download is available at katie-strachan.com/shop, but I strongly recommend the paper version, currently in stock at:
The Attic 
Sassy Jacks: https://www.sassyjacksstitchery.com/product/britomart-sampler-katie-strachan-artisan-embroidery/
Needle in a Haystack: https://needlestack.americommerce.com/chart/KS-BritomartSampler.aspx 
Acorns and Threads (US): https://acornsandthreads.rainadmin.com/shop/New/p/Britomart-Sampler-The-chart---Katie-Strachan-Artisan-Embroidery-x90935341.htm
Crewel Gobelin (Australia): https://www.thecrewelgobelin.com.au/p/9584226/britomart-sampler---katie-strachan-artisan-embroidery.html
Traditional Stitches (Canada): https://www.traditionalstitches.com/p_ksbrito.html

Details: the kit includes the chart, called for linen, and all silks, comprising a mix of Paris and Gobelins to allow you to use the best thread for best results with each stitch used (as directed in the chart): $194

Class with full kit: $300
Class begins on September 15, runs for 7 months, and covers all details of the working of this piece, either single sided or reversibly.  All skill levels are welcome.  Late registrations will be accepted.

To aid you in deciding if you would like to stitch the sampler reversibly, I have a brief introduction to reversible stitching: https://youtu.be/MN3x9cBzq-4

Tricia Nguyen of Thistle Threads' visit to Au Ver a Soie: https://www.youtube.com/watch?v=gxvF0hPo7WA&t=1s
The Attic's flosstube (discussion on conversions is towards the end), Spring into May, a Royal Introduction: https://www.youtube.com/watch?v=LZqgeo2YhUE