I just bought some garnet sand that is listed as 30-60 grit, 50 pounds for $30 Canadian (currently about $22US) at a discount tool place called Princess Auto. Two bags on separate occasions, one was slightly less red than yours and one with very little red at all. Mixed 100 pounds into the 250+ pounds of pool filter sand already in the tank and it darkened/coloured the substrate very nicely.
Maybe not the perfect choice if the reddish colour is the goal, but...at 75% lower price...
It's a very dense, heavy sand that doesn't stir up into the water column.