For '98 E0's the moonroof and CD player were the only options.
For the E1's and '99s the moonroof and cd player were no-charge options. Spoiler wasn't a factory installed option untill 2000 and thus only available in the US.
I also remember reading an article about how a fully loaded Mystique was priced slightly higher than the SVT was, so around $28,000 sounds about right.
My Cars
1999 Silver Frost SVT - 80,000km #2603/2760 Aug. 10, 1999.
1996 Mercury Mystique LS V6 MTX - retired @ 323,151km.
1995 Ford Contour V6 MTX-sold @ 214,000km