3B Piston rings

[Kurt Deschler]

I am trying to source a set of 81MM rings for a 3B engine. Worldpac has 
the following goetze part numbers:

A2050-243404 ~$17 clearly indicates 1 set/piston
A2050-12784 ~$80 just says piston ring set

I ordered the latter and got a set for 1 piston only. I assumed from the 
price that this would be the entire set. Now I'm not sure if I got the 
wrong part or not. Can anyone explain which is the correct part or what 
the difference is? I am also going to price the rings from Audi.

Thanks.

 	-Kurt