Do a lil research I dont think It sells by the name SOUTHDOWN anymore (I could be wrong). Search on RC youll get a pic of the bag and the new name. LAst time I found a few bags it was at the HD by Flushing Meadow park. GOOD LUCK.
o yea, i should mention to everyone. i found yardright at "garden world" on francis lewis blvd in queens. i read it's just as good as southdown and old castle. i completely forgot that i saw it there. but they probably won't get any of that sand in until the spring.
the hd off route 80 has tropical playsand, exit 63 or 64, i think 63 is a better exit.they're 40 pound bags i believe.i have a bunch of bags from there, they cost me about $5 dollars a bag (4.98 to be exact).but i doubt any of this would be useful to you, i just noticed you live on LI.