Buy now.
Otherwise there may be no new releases.
Small enterprises need to get the funds to pay for new sculpts, make new moulds, and get new casts. Those funds are based on the sales from previous releases. If you choose to wait... they won't get enough money to account for the expenses of a new release.
So if you like something, just buy it. Otherwise it may disappear.
And I am saying that from the perspective of a customer who delayed some purchases from small companies, waiting for a "later bigger order", only to see those companies go out of business. Twice has happened. And I've promised myself to never make that mistake again, and try to warn others.