Costco mail order with generic Vyvanse?

I’m in an area where nobody has been able to access generics to Vyvanse for months, and did learn that a Costco out by where my mom lives is very occasionally getting generics so there’s theoretical hope. As I was looking into it because my insurance is treating generic and brand both the same ($360 a month), I started to wonder if people have had luck getting the generics from the mail order pharmacy, as while everywhere has delays on filling and limited amounts, some places are getting trickles versus my area that the spout is off. Has anyone had any luck through that recently?