A while back I questioned the subject about Princess's wine tasting glasses. They've changed their style a bit to a colored almost plastic look & are available in four colors. Red, green, black, sliver. There still giving them away free to Elite pax. The older ones are available for sale for $3.99 (no discount) at the 1 day sale towards the end of the cruise.
Note- They hold the same amount of liquid. 1 shot.

The wine glasses we got were glass that were painted. But we have a collection of the ones you have pictured as well. We got those from after dinner drinks.