I have a nearly-full piece of DMX tiling membrane (~11', a full piece is 16') as well as maybe 15-20 sq ft of smaller pieces from about 12"-20" in width. I also have partial bags of Schluter AllSet and Mapei Ultraflex 1, as well as Mapei grout in pure white and eggshell. Plus some tools I probably won't use again, not included in price here but certainly negotiable.
https://www.homedepot.com/p/DMX-TILE-MEMBRANE-Tile-Membrane-54-Sq-Ft-40-8-x-in-W-16-x-ft-L-x-3-mm-T-Uncoupling-Underlayment-for-Stone-Ceramic-Porcelain-Tiles-DMX-Tile-Membrane/332411689
https://www.lowes.com/pd/MAPEI-UltraFlex-1-50-lb-White-Thinset-Tile-Mortar/ show contact info
https://www.lowes.com/pd/Schluter-Systems-All-Set-50-Pound-s-White-Powder-Thinset-mortar/5000281363
https://www.lowes.com/pd/MAPEI-UltraColor-Plus-Max-10-lb-Pure-White-Sanded-Grout/ show contact info
https://www.lowes.com/pd/MAPEI-Keracolor-Sanded-25-lb-White-5000-Sanded-Grout/ show contact info