Just an FYI for those looking, Bischoff was one of the OEM mfgrs. for these 2L Banana mufflers, & probably made the largest number of the standard mufflers (Leistritz made standard & "sport" versions of them).
& the pix look like it's in pretty solid condition - on the outside anyway, & should paint up nicely with some VHT Exhaust Gray to look presentable.
It certainly looks nicer than my 1980 purchased Bischoff on my 2L!
I can't say if the price is fair, but it's worth comparing it to the price of the brand new 2L Banana from the current Porsche OEM supplier Dansk/JP which is all new & purdy, & it has a chromed tailpipe, so you won't need to add the chrome exhaust tip - if that's your preference.
Shipping is perhaps a tad high, but then it may fall into UPS oversize pricing, depending on how it's boxed (IIRC my 2L Leistritz coming from NY was around $35-40 a few years ago).
No affiliation, just sharing some facts & opinions.
Tom
///////