I would not pay more than $25. Anyone with the right tools can make one for a few bucks. That one on ebay started at about $15 and now it is up to $51. I bet he will be selling more of them after that auction!
i e mailed him he told me that they were gunna be 40 bucks +9 for shipping, but realy i looked into it and cant even find 1 1/2 in. stainless pipe ,even from steel companys in minneapolis , burns stainless in CA. ive even called this guy ( headers by ed ) he only had 1 5/8 stainless straight or j bends 18 - 20 inches for 46 bucks but you could make 2-3 of em then you still need the 1/8 in plate