1989 911 Speedster (technically a G-body, but conventionally grouped with the 964 era given the model-year crossover) was one of the first Porsches to sell with ADM ('Additional Dealer Markup') / ADP — average $50k over MSRP, $120-130k nationwide on a $75k sticker. Current market: comparable Speedsters in clean condition trade ~$190k; damaged-history examples sell $50k below that — even after subsequent PCA national concours wins. …
1989 Speedster — original $50k dealer ADM, today's pricing reset
Porsche 911 (964) · value-and-market