STB Question

I went back through and searched the old threads about the strut tower braces and found the link to the drcustomparts website. They give a part number for the V6 cars strut tower braces - part #12498648 - front and rear bars. They are priced at $85.00. That website tells you that those are GM performance strut tower brace bars and that you can find them at Pace Performance. I went to the paceperformance.com site and entered the part number and it come back with a picture that looks the same and has the bars listed for $27.92. It says the bars are for 97-03 Grand Prix's and 00-03 Monte Carlos. What gives? I just don't want to order the wrong part. Why is it so much more expensive at DR versus Pace? Does anyone know if there is a difference in the parts that I'm just not seeing?