This is often repeated so I'll do it again.
I recently saw a Topping model of a large model of an airplane on eBay. The scale was wrong. So I wrote the seller and gave them the directions for finding the actual scale of the model. Topping produced many display models of various airplanes they were almost all in 1/40 scale.
Here is what I said:
UNLESS YOU LOVE TO GET NEGATIVE FEEDBACKS I SUGGEST THAT YOU CORRECT YOUR LISTING. THE SCALE OF THIS MODEL IS 1/40, NOT 1/32 OR 1/24. THE WINGSPAN OF THE REAL AIRPLANE IS 44 FEET (REFER WIKIPEDIA) MULTIPLY 44 (FEET) X 12 (INCHES) TO CONVERT THOSE FEET TO INCHES. DIVIDE THOSE INCHES BY THE WINGSPAN OF THE MODEL (IN INCHES) AND YOU GET 40. THE SCALE OF THE MODEL IS 1/40. ALMOST ALL OF TOPPINGS MODELS WERE MADE TO A SCALE OF 1/40.
The model is theNORTH AMERICAN [U.S.A.F.] T-39 SABRELINER JET, TOPPING PLASTIC ABS MODEL STATUE #282799844406
They wrote me a nice reply thanking me for the info. Also they corrected the scale on their listing.
That is why I never refer to "evilbay". It should be ignorant-bay maybe, since most of the sellers I have dealt with since the 1990's have been honest, but at worst ignorant, not evil nor stupid.