How do I price wedding cakes?  by the piece, how long it takes, all of these?  

thank in advance for any help i get.

Its different for everyone, but the standard is to charge by the serving, and determine your per serving price by your overhead costs and labor time. I start mine at $3.00 per serving and go up, and my small town is kinda on the cheap side, or else I would charge more. I think $3 - 5 is far for a good quality wedding cake. Go less if you are new to it, or if it is suuuper simple.