Intel SSD 600p Series (128GB, M.2 2280 80mm NVMe PCIe 3.0 x4, 3D1, TLC) Reseller Single Pack $65 at NewEgg
If you want a Sata 3 version SK hynix SC308 128GB M.2 2280 SATA Solid State Drive $55.99. Something bigger of say a 250GB the SK hynix SL308 250GB M.2 SATA3 Solid State Drive (TLC) is $80.99 on SuperBiiz