So I decided that seeing as 10" round cakes from Sam's Club only cost like 13 bucks, I'm going to forgo the "tiered" cake, and just buy those. I was gonna DIY some cake stands, and make them staggered so I still have the "tiered" effect without any of the mark-up. But i'm trying to figure out how many servings a 10 inch round cake has, and how many round cakes we would need! We're expecing 50-ish guests to show up, but every site I look at on google tells me something different. Out of all the sites so far, i've seen it estimated that one 10" cake will have anywhere between 10 and 40 servings! That's quite a margin of error, considering we won't have a professional caterer or someone to cut the cakes for us. So would you think 3 of these 10" cakes would be enough, or should I get 4 and maybe put one in the fridge at the venue just in case? I don't want to have a bunch of freakin' cake left over, but I want to make sure everyone gets enough... help!