Good link gerty. They list @ $122.14 each.
I guess, if you wanted to do an "X" pipe system and these pipes, you could have a nice set up.
Summit/Jegs kit vs Pypes tails only is about equal.
$200+ chump change vs $244.28 and shipping.
Lower performance vs better performance @ a higher cost.
(What else is new?)
At least theres a place to get tail only in a decent size. (2-1/2 & 3 inch)