Many Collectors do not buy new buttons but I have bought quite a few in the shops if they take my fancy. I figure they will be antiques of the future and that they take their place in Fashion History anyway.
A lot of them are made of Synthetics or plastic of some kind. These days a great effect can be achieved to replicate many materials used in button making in years gone by. Many are made in China and Thailand as well as other countries.
All of these “new”buttons have been bought by me between 2002 and 2017.