Best place to get rocks for aquascaping

you may want to spend some time in this forum;
http://www.plantedtank.net/forums/new-york/

this web sight sells most of the Feller line;
http://store.seacorals.net/drst.html

when buying on ebaY, don't bid until you confirm the
shipping with the seller by emailing him your zip code.
many heavy/bulky items sellers make more of their
profits on shipping, since it's the portion ebaY can't tax.

I would also explore the remaining Flower District
around 6th-7th Ave in the mid to high West 20's.
There are still a lot of Bonsai shops around that
sell sticks and stones useful for fish aquariums.

IMHO: your blue stone looks too artificial for a planted tank.
so unless you want to go back to plaster castles, bubble
wands and cute No Fishing signs, let the plants and fish
be your color, and everything else a textured landscape.

I second the landscaping supply suggestion. I bought 140 lbs of granite boulders from a landscaping supplier for $13. Here are some pics.