I've gotten rocks from them in the past, very similar to what you get at reefcleaners or other online stores. Very very porous and looks great.
The sand is fine, not at all pointy which is what I wanted for my sifters. Pool filter sand is a tad bit too grainy for my tastes when it comes to sifting gobies.
I ordered the sand just the other day and it arrived today, pretty quick shipping. They used to take their time on shipping but it seems they have improved.
Also the cheapest place I have found rock and sand so its worth a try in my opinion.