Dear both,
Thanks for the great idea. I'll give them the link to US Ebay (we wouldn't be able to understand how to use ebay.fr), and have them pick what they like from there. Problem for them is, the sets are old--but it works for my budget!
What you’ve said about wear and tear/one glass is no big deal is comforting (but I really wonder how I might react if MY glass got broken!) – I come from a household where everything is cheap and disposable, so I was worried about such fancy items.