I think they are more affordable on Kensfish..
Brine shrimp direct doesn't even send you the size you buy half the time , they just change the label ..And then charge you shipping on top of it !
I had a jar of "1,000micron" and when I got half way down into it I found magic marker under the label sayin 800 ! I now only buy my BS eggs from them as there just isn't a better choice for that .
Pretty funny they were too stupid to think anyone would ever see it from the other side of a clear container once they put their 1,000 micron label over it !
I too love golden pearls and keep every size besides under 100 micron and all my fish eat them ..
My swordtails will eat the 100 micron all day even as full grown adults ..They are some efficient eaters !