The second plant with the name R. korthalsii on the shop ~ they seem to me distinct, but it could be clonal differences..  This one is smaller, with more texture on the leaves.  Not sure whether either is korthalsii or not. If anyone with expertise in Aroid taxonomy wants to help sort this out, I’d happily send you a plant of each.

Available plants are well rooted and growing in 2″ pots.  The last image is representative of the plants available.  They will be shipped potted.