Teeth

I had to go to the dentist this morning so am now enjoying that newly cleaned tooth feeling for the low low price of $210. I've been told I have 3 "surface" soft spots and one that probably has a cavity underneath a pinhole- what does that mean? I made the appointment to have the first 2 filled but am reconsidering as to fill all for would be in the $580 range. I'm going to decide on Wednesday - if my 649 ticket is a winner I'll fill them if no I'll wait.