I just checked Supersprint's NA website, and their prices have gone way down in the last week.
Y-pipe (p/n 022 788 113) $380.74
Race Muffler (p/n 022 044 125) $679.47
FYI:
Headers (p/n 022 787 401) $1486.34
Street Muffler w/ Twin Tips (p/n 022 788 106) $1001.68
Street Muffler w/ Oval Tip (p/n 022 788 125) $988.45
SS NA Website