We have these little farms that set up in parking lots/side of the road this time of year and sell only corn. I stopped to buy some corn and he had some garden plants.

I picked this up and it was marked Sedum kamtschaticum variegatum. My Sedum KV is not any bigger than about 1" one head on these are 5". I did a search and I have not found any Sedum KV that says they get this big. Maybe he is feeding them something special on the farm.

Anybody ever seen this sedum have a head this big?

Wow, that is big. Plant it out and see if the size changes to what is normal for S. kamtschaticum variegatum. You may have the right idea, it has been feed something that has made it grow larger than normal.
It will be interesting to see if giving it more sun will bring out more color in the leaves.

No I haven't. Really doesn't look like Sedum kamtschaticum variegatum to me.

Okay, the best has not seen them this big I feel better.

I planted it in my sedum bed which is lean I will see how it reacts not being grown on steroids.