Don't worry. All the work completed at Steve Kitch Mastering is via the online mastering system with 1000's of happy clients. Apart from the cheaper costs, think about the fact that you don't have to sit through a 10-hour session listening to the same 15-second section of your track whilst the EQ is being tweaked! Steve is vastly experienced and know's exactly what is needed to make your tracks sound great. Just make sure you provide lots of notes and examples of other material if needs be.