Question for fellow Porsche aficionados

[NickCats]

My buddy is looking for a C4S and came across this :

http://www.autotrader.com/fyc/vdp.jsp?rdpage=thumb&car_id=218689308&dealer_id=55845403&car_year=1997&model=911&num_records=&make2=&start_year=1997&keywordsfyc=&keywordsrep=&engine=&certified=&body_code=0&fuel=&search_type=both&distance=25&make=POR&color=&min_price=&drive=&default_sort=priceDESC&max_mileage=&style_flag=1&sort_type=priceDESC&address=60195&advanced=&end_year=1997&doors=&transmission=&max_price=&cardist=12

What is so special about the 1997 C4S ? $100k for a 10 year old car ?

Sticker was only $77.5k ?

Is it because it is the last year of the air cooled 911’s ?

Thanks,

Nick