Of course it has been discussed before. The search function is your friend.
Many a time we have discussed the monsters coming from the Ukraine. They feed on nubes such as yourself.
Remember Thud's First Law of Opposition:
If the deal seems too good to be true, it is.
Walk away. You are their target.
As to the individual sellers you mention, are you advertising them? I doubt it but it's generally considered bad form to bandish the names of ebay sellers outside of the deals forum set up for that purpose.
I hope that helps.