Right now I'm trying to decide whether to go with regular plaster or a smooth pebble surface. I'm having a hard time getting a straight answer on how much a re-plaster job costs, since the PBs would rather get the extra $ from the pebble markup. And is it true this needs to be done every 10 years or can you stretch it with good pool maintenance? The pebble has a 15 year warranty, but I'm trying to do a cost-benefit analysis.