All holders except the boring bar are affordable. All of the tool holder sets I've seen used either a 5/8" mandrel or a round bottom shank to hold the boring bar.
Pros
Set includes 6 turning holders (SCCMN, SCDCN, SCLCR, SCLCL, SCKCR and SCBCR) 1 drill holder (SCLCR) 1 Torx T8 key