check out the pet zone website they have all the more uncommon arrowanas and they have good prices. I know that pet kingdom has a big one for 400$ ridiculous. there is one for 80$ on craigslist and a few other cheap ones.
lots of cool fish at all the stores here right know! pet zone got in a ton of new fish and they always have tigerfish, African pike all those big aggressive fish and pet kingdom has a decent sized Goliath.