Since I own a "true Deluxe" coupe, which I have owned for over 61 years, I can attest to the fact that there are many items which separate the Deluxe from the standards..
Single tail-lights a painted grille, painted dash in lieu of wood-graining, three digit trip odometer, single visors, painted windshield frame, are the most obvious.. Dual taillights do not mean much because some states required two tail-lights..
The the list of options, i.e. dual wipers, radio, heater, etc. goes on and on.
The accessory options were all dealer installed, so the variations are endless..
It should be interesting to note that in the late 1940's, early '50's, there were more standards than deluxe' around.. Times were tough during the later part of the Great Depression, a $25.00 difference between two cars could, and would be a deal breaker.
Of course as people started fixing their cars up, hot rods and/or customs, they cloned the standards into deluxe models..
It is near impossible to establish a value for a car based on internet hear say... I would suggest that you have the car appraised, or at the very least use the values shown in the Old Car Price Guide.