You talking about putting a car that you don't own? Unethical yes illegal no.
How would it not be fraudulent? What if I hit his reserve price at a ridiculously high number and he didn't have the item to sell?
1968 400 Coupe, verdoro green, black vinyl top, auto 1969 GTO Judge coupe, Carousel Red, manual 1971 Trans Am, cameo white, auto 1970 Buick Skylark Custom Convertible 350-4(driver), Fire Red, white top, auto 1972 Buick GS Stage 1, Royal Blue, black vinyl top, auto