GYO is a recent startup- they advertise themselves as being more into breeders packs. The folks from Bonza are behind GYO, as well as Demon, and Pick and Mix.
Your best bet is to go online and look for reviews. You'll always see the occasional bad review of any company. If you're seeing many bad reviews, and/or sensing attitude from the company, skip them. Why risk your time and money? You can get the same strains elsewhere.
From what I've seen you can expect from GYO more of the same as what you've been reading here. They're not a scam. Most people will get their seeds. But IMO they care about your money much more than they care about your satisfaction, and eventually that kind of attitude always shows through.
It's not my personal mission to go out of my way to slam this outfit- I only meant to come on to make the one original comment, not write a book about it. My point was- there are many good seed banks, don't waste time on questionable ones. I would try Herbies or Seedsman or one of the well established favourites to get a sense of what a good seed company actually is.
My friend recently won a seed gift certificate from GYO in a growing contest. I dont know the details, but apparently dealing with them was so frustrating that he abandoned the effort, turned down the free seeds and said he will never touch the company again.