Sevs - what state are u from? Polli are hard to find cuz they're mostly wild caught. It's not a desired bichir as well. There are captive bred ones out in the market. Which is produced in Asia, but often mislabeled as Palmas.
Key note: Your LFS is at the mercy of what their wholesaler has in stock. If Seagresst Farms is one of them. There is a shot. Check Seagrests' website. I was in the hunt for Afrowana years ago and asked all my lfs if they buy from seagrest. Once i found one, i had them order 5 pieces. :--)