I believe it was around a 3500$ option. Pretty standard price for a sport package upgrade on a 3 series. Most later cars (like my '98) have sport package because BMW was doing a promo for the 328's with sport package.
hid lights hid kits
Hot: 2001 Estoril M Roadster
ZCP 19's, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
ZCP 19's, ZHP knob, GROM, OEM 18's,