On Aliexpress (that, for many of us, is way cheaper than Mouser, also due to the shipping fee) you can find only this type of edge connector for that pitch (I didn't find any other):
Unfortunately it has bigger pins than the respective holes on the mainboard. I will try to drill the mainboard a little to fit that connector, but you maybe would update the Gerber with bigger holes for future builders.
On Aliexpress (that, for many of us, is way cheaper than Mouser, also due to the shipping fee) you can find only this type of edge connector for that pitch (I didn't find any other):
Unfortunately it has bigger pins than the respective holes on the mainboard. I will try to drill the mainboard a little to fit that connector, but you maybe would update the Gerber with bigger holes for future builders.
Cheers, Giovi
EDIT: to drill was a BAD idea. Don't do that.