Understand that you aren't asking Graeter's a question here; a bunch of Google users respond. So while *I* don't sell ice cream cakes, Graeter's does--but Graeter's will not respond to your question. To find dimensions, serving sizes, prices, etc., Google users would have to look up that information on Graeter's web site... which you can do yourself easier than asking the question here.
Greater's has cakes which you can browse on their website
Give them a call. I am sure they can answer this question for you. They are a friendly staff. The icecream is delicious!
Thanks! Your answer is awaiting moderation.