Geneworks is an oligonucleotide synthesis and sequencing service based in Thebarton, Adelaide. The majority of their business deals with preparing custom oligos for PCR-based applications. At this, they do an excellent job, often charging only $1 per base pair (for a 20 oligo primer, $20), unless you want them methylated, or a variety of other custom alterations that they can perform. Service is very professional, delivery is quick (~2 days), and quality of product is always high.