What is the original US sale price of the 1995 Audi Model 90 Sport? 
Car came equipped with FULL option pacakage, including leather,
sunroof electric door locks,electric seats......even heated windshield
wiper fluid.

Hello.

Base prices for this vehicle are available in document on the web site
of the State of Michigan:

1995               Base Price ($)

Audi Sport 90
  - 5 spd transmission - 26070
  - Automatic trans    - 26970

Audi Sport 90 Quattro  - 27570

source: State of Michigan
http://www.michigan.gov/documents/1995combca_19880_7.pdf

---------

Using a library newspaper database, I found an article from 1995 that
listed the option prices for the 1995 Audi Sport 90:

leather seating, $1,240

heated seats and windshield washers, $340

comfort and convenience package, $1,780, which includes eight-way
power driver seat, auto climate control system, power sunroof, remote
locking

Transportation, $445.
  
source:
The Denver Post, "Sport90 missing only a snowplow," April 21, 1995 
http://nl.newsbank.com/nl-search/we/Archives?p_product=DP&p_theme=dp&p_action=search&p_maxdocs=200&s_dispstring=sport90%20AND%20date(1995)&p_field_date-0=YMD_date&p_params_date-0=date:B,E&p_text_date-0=1995&p_field_advanced-0=&p_text_advanced-0=("sport90")&p_perpage=10&p_sort=YMD_date:D&xcal_useweights=no


You can use these base and option prices to figure out the MSRP of the vehicle.

Your question didn't mention the transmission of the vehicle or
whether it was a Quattro.

Suppose, for example, it were an automatic transmission, non-Quattro...

base price             26970
leather                 1240
heated seats/wipers      340
comfort/coven. package  1780
transportation charge    445
                      ------
              total    30775

-------
search strategy:
audi 90 sport
audi "sport 90" "base price"

I hope this helps.

Perfect answer and FAST response.  Thanks!!