Even at the $99 asking price I thought there were too many flaws in the design. Most install pictures I have seen show the intake coupler stretched at odd angles, but adding an extra elbow would mess with the mounting location of almost any intake. They also don't seem to have the connector for the wastegate actuator hose anywhere on the pipe. I went with the HTP one (there's a thread about it in the forced induction section... where people generally find turbo/turbo parts related questions) because it has the angle at the top incorporated as one piece, all the openings and mounts are spot on with the stock locations, and uses the rubber grommet in it's top mounting point instead of being a hard connection directly to the engine. I was able to justify paying a higher price, while still much less than the RPMC inlet, because i felt it was just a better product all around.
EDIT: Not sure if the medieval inlet and darkstar inlet are the same, but it looks like the darkstar one has the wastegate hose connector, all other design features/flaws seem to apply.