From a buyer's perspective: I would never buy a Squier used unless it came crazy cheap.
New Squier instruments aren't expensive, so there is never a lot of money that I could save buying used in the first place. But, buying used, I can't return it if there is something wrong with it, and, although Squier makes very solid guitars these days, there is a fair chance that a cheaper instrument has some kind of fault. AND there is a fair chance that this is exactly the reason why this specific instrument is being sold. So, I'd rather pay a few bucks extra for the option to return it if it isn't up to standard.
I would only willing to pay a higher price if the instrument offered was in some way special. Squiers are not special. Again, solid guitars, good players, but ultimately they are just more of the same FSOs. They may sound good and play well, but other guitars do, too. And paint it however you want, they look like any other FSOs as well. Unless they have little Mona Lisas as fretboard dots, I won't be paying premium because the body is yellow instead of red.