I have 12 6-packs of wired stem monstera leaves. These are new in their packages, from Amazon, listed as palm or turtle leaves with a price of $16.88 for 6 leaves (there's a pic of the listing).
They have long, firmly flexible stems - overall 27" and the leaves themselves are 7" long and 6.5" wide. They are plastic, but realistically toned (see pics) and work well in floral arrangements or alone in a vase. Each leaf has a plastic sleeve over it, packed in a zip bag in groups of six (stems have been gently bent to fit in the bag).
I will sell in groups of 12 leaves for $15 - so two 6-packs for $15.