I have scions of a low chill cherry available that is tough to get.
It is not patented so they can be exchanged between growers. It is called "Cristobalina" from Spain. It fruits well in areas with at least 100 chill hours, I've had mine fruit with only 50-75 chill hours.
The scions are $5 each with a minimum of 2 scions. I can only ship within the USA. Shipping would be $5 for any number of scions you purchase.
Please message me for orders.
Thanks, Mark
https://arboreumco.com/products/cristobalina