I wouldn't personally sell a large culture of my VE for less than $6. You have to realize that at LEAST $3 and probably more is giong to go to shipping, so thats less than $3 profit for the culture itself, not to mention the effort of selling it, packing it, and taking it to be shipped, plus shipping supplies etc. That is still very llittle if any profit. Just my 2 cents
. I never sell mine for less than that.