I didn't say anything about Kit or the shipping price haha that was Scout.
If i had to preorder this I would've gotten it from Kit for sure, he's my go to seller all day everyday.
Ok so I might have a solution for a DIY adaptator.
You just take one like these and cut the "ring" part of the peg (in red on the picture) and the little molding left over on the top of it.
Then you could use a dremel to dig a hole and glue a magnet in or just use some electrical tape to add...