I can only answer for myself, Rolf, and I would say yes 30 Euros plus would be out of my range too.
I guess it all depends on why you want the photo. For me I only add it to my reference photo file as "another photo or another eample" of something that interests me.
For you and others who actually own a vehicle that appears on Ebayde or other sites or who are hard core "genuine article" photo collectors I guess it would be worth a lot more than I would pay. Actually, I pinch most of my stuff from Ebay and just accept the quality of the image as it is. Helps me to try to improve my photo editing skills
BTW, that was an awfully good photo and I got it myself also.
Cheers
Bill