I have 24 mint julep cups for sale after buying these from another knottie. They are 4.25" tall, 3.5" diameter at the top and are shiny plastic and seem like they're very durable, although they've never been used (still in the box I received them).
They are $45 for 24 mint julep cups, with shipping additional (prob $12).
Please email me at [email protected]
if you're interested. Thanks!