the e38 has no specific market value..... bec thr r very few on the road..... i got an e65 n tried selling mine to a dealer but only got offered 20k !! so decided to give it to my father in-law ..... i guess if u r patient u can get a higher price... anyway if u r basing on about 20-25k , i dont think it will drop much more even in the near future... thats y most e38 owners decide to keep them n restore it
btw ... love the e38 more than my e65 bec it feels more like a drivers car than the e65 which , although comfortable n stable , feels more like a chauffeur driven one!!