Lab grown meat could in theory be a lot cheaper. Presumably if grown from a kosher (with good hecksher) source it would be kosher. Some might argue that isn’t necessary. At present, it is neither cheaper not better than meat produced by raising and slaughtering the animals.
However most if not all poskim are not “into” science fiction, or at least do not write halacha books on inventions that have yet to be invented. So we’ll have to wait untiil lab grown meat is commercially available before getting an answer.
“Rav Chanina and Rav Oshaya would sit [together every] eve of the Sabbath and delve into the Book of Creation. A calf which was at one-third of its maturity would be created for them and they would eat it.”
Sanhedrin 65b