If you are looking for a Pied male to bred to you Spider het Pied female you could probably wait to buy the male until next year, as females usually take about a year longer to mature.
For Piebalds I'd recommend Carl Gilmore of Suffolk Selects http://suffolkselects.com/
He has a really nice line of Piebalds and his prices are always fair. Here is a pic of a Pied I bought from him last year:

He came from a 11 egg clutch that one of Pied girls laid