@xevious sorry I don’t follow the cost so don’t know if there have been sales or not.
I did test with (IIRC) Littokala versus Samsung 40T and found no difference in Turbo start brightness. The Wurkkos TS30S with that monster LED SBT90.2 is the only light I have that shows Samsung 40T having a huge advantage.
Yes M21E is my favorite and most used light. 330 m throw + brightness + good Ra and R9 + beautiful Nichia-like color rendering. There’s really not much more I could ask for. Unique in today’s market place IMHO; you won’t regret it.
Thermal mass is yet another plus as seen in my home test below.