I may have to shoot my LFS another email, see if they don't stock them/could get some for me. I really hate going in there though. The shop is primarily for marine tanks and they definitely seem to talk down to their freshwater customers. That aside, the owner is a total <insert your choice of four letter word here> who thinks he's the final, most expert word in anything and everything. Meanwhile all of his bettas are kept in bags with so little water or oxygen they're usually literally lying on their sides in a puddle whilst a baggie collapses in around them. Any display tanks set up for them are unheated, unfiltered, and usually around 2L, its miserable! Not really the sort of practices I'd like to condone with my business, but it might be more affordable for me to get them through him.
"The time has come," the Walrus said, "to talk of many things: of shoes—and ships—and sealing wax—of cabbages—and kings—and why the sea is boiling hot—and whether pigs have wings."
"But wait a bit," the Oysters cried, "before we have our chat; for some of us are out of breath, and all of us are fat!"
"No hurry!" said the Carpenter.
They thanked him much for that.