I presume you mean "Brislenose Plecos"...
They are fairly easy to breed and you only need a male/female combo, no need to worry about having a group of them!
The babies can easily be sold to your local fish shop or sold on privately, Bristlenose Plecs are very popular fish as they are one of the smaller plecs that eats alot of algae!
If you suceed in producing fry, make sure there is some sort of algae source for them to feast on, it is very important. Also things like cucumber and algae wafers would go down well.
Ben