Well.... probably. Except the Mark V isn't 200 more than the sst. Mark V is 569, plus shipping. That is 240 more, plus shipping which would be around $30.
Of course the MarkV is much better. It now says it uses deddaccai tubing, and pretty much all the other components are better. If you have cash and want a serious bike (meaning you know you like riding SS/FG get the IRO.