None in stock for a couple of months, waiting for them to grow up a bit!
The swiss cheese plant is almost the archetypal houseplant. When grown well it is the focal point of any room, when neglected it turns into a mass of aerial roots and miserable stunted leaves.
Give it good light, don’t move it around a lot, and water and feed well. It prefers not to be tucked away in a dark corner, and if it is it will stretch towards the light. Younger plants have less holes, a plant that has been recently propagated or is lacking in light/water/warmth will often not produce the prized multi-holed leaves.