Never used them, but check their reviews. Lots of complaints, plus they appear to be ripping off the work of other people, lastly I looked at the site, and the prices, IMHO are high, and they only seem to sell 10 packs or larger. You're better off using a
@420 sponsor, first if there's a problem, you've got more recourse, second, many of the
sponsors give 420 members extra freebies or a price break.
Edit: They sell a lot of S1 seeds, which tells me that they are probably getting feminized seeds/strains from a breeder, growing/cloning them, doing a colloidal silver spray to change the sex and then self pollinating them and selling the resulting seeds (S1). Basically, profiting on the back of someone elses work. Nothing wrong with S1 seeds, but a kinda smarmy business model, IMHO.