You can buy a 100yd coil of 300-400lb mono from cut rate on I-10 for $13.00 they've also got the crimps for fairly cheap. 50 for $6.99 I think. Don't quote me on that price, but I do know the price of the line is right.
Found a lead on a place in Port Arthur. Kims Marine and Fisherman Supply. Sells in larger quantities (i.e. - 20 lb. spools at $6 per lb. and 500/pkg. sleeves for $30). Got a buddy checking on possible smaller quantities in person tomorrow.