Trudy
@tabbycat
Are you looking for named clones? Those are a little hard to find.
Alstroemeria are not difficult to grow from seeds. There are various strains. 'Ligtu hybrids' are the most common. Several seed sellers have them and they're affordable.
I bought some 'Ligtu' this spring from Seeds N Such $3.99 / 8-10 seeds. $13.75 /50 seeds. I've grown them before, not too challenging.
https://seedsnsuch.com/product...
A search did also find several named types being sold as plants/bulbs.
Best of luck finding some you'll like!
Pat