Which wholesaler sells em?
Quality Marine. Their cephalopod list has:
Algae octopus (A. aculeatus)
Greater blue ringed octopus (H. lunulata)
Flamboyant cuttlefish (M. pfefferi)
Chambered nautilus (N. pompilius)
Common octopus (O. vulgaris)
Pygmy octopus (O. digueti)
Atlantic pygmy octopus (O. joubini)
Pygmy zebra octopus (O. chierchiae)
Giant cuttlefish (S. apama)
Wonderpus (W. photogenicus)
They also have a few other species from the genus
Octopus available, but they're only listed with a common name that could be used for various species - these are "Octopus" (sourced from east americas, west americas, central pacific, south asia, and eastern asia), "Flashing Tiger Octopus" (sourced from west americas), "Orange Spot Rainbow Octopus" (sourced from west americas), and "Red Octopus" (sourced from eastern asia). They also have "Cuttlefish" for sale sourced from the central pacific and eastern asia (they also sell eggs of them sourced from east asia).