It also bugs me quite a bit when decals or models are presented as 1/24-1/25 scale. Even though models may not scale out exactly to either scale, I'd at least like to know what scale they're TRYING to represent. I really don't want to buy, say, a Trans Am decal sheet, find out it's actually 1/24, and end up with an overly large bird on my 1/25 Trans Am. Or a tiny bird if it happens in reverse. Certainly whoever did the artwork must have had a specific Trans Am model in mind when making the sheet!
I know of an eBay resin seller that uses 1/24-1/25 scale to describe his resin cars, some of which represent, or are modified from, models of a known or stated scale, usually 1/25. Why not just say 1/25?
Again, I know models aren't scaled perfectly, but I also know I can get more 1/25 cars on a shelf than 1/24, so there must be a difference!
I can't imagine looking at a Lonestar on the shelf with the box claiming it was faithfully scaled using manufacturer's Cad drawings to an exact 1/24-1/25 scale.