Record Union are currently partnered with a mastering studio called Sage Audio and can offer a 10% discount on all their services. Sage Audio offer highly competitive per-track mastering rates, a smooth submission process and professional results.
1-3 : $34 / song
4-6 : $32 / song
7-9 : $28 / song
10+ : $26 / song
Remember that Record Union users save 15%!
You can find out more about Sage Audio and other products and services here.