Really great selection, but this is the wrong season for it. Not sure what you're getting the algae for, but the algae will need a relatively high nutrient system with good lighting to thrive. I've ordered from them several times for my seahorse tank. Their quality is great, but I can't seem to keep the algae or grass alive long term.
Reefcleaners is awesome for cleanup crew, and you can't beat their penny macro, but the low prices on macro are relative to the portion size. If you're looking for a substantial amount, you'll need a few portions. The upside to the small portions, however, is that you can try a bunch out in the tank and see what grows and what doesn't without spending a fortune.