I remember seeing this happen over the years in Canada, likely all over too. For anyone buying a pre-owned aluminum bezel piece they should be aware of the fact that Swatch (at least in Canada) does not sell just the insert. No clue why, but believe me I tried. It was over $400 CAD plus tax several years ago to buy the spare part.
For the higher value pieces I'm happy to pay this, but for the Chronograph models which can still be found for around $3,000 or even $4,000 CAD it doesn't make as much sense to me.