I received the vouch and yes its premium
but since I'm new to Grammarly I decided to take it for a test drive see how good it really is so the first thing I used it for was this very review and yes it works beautifully as you can see this review has no errors what so ever everything that needs to be capitalized is capital everything that needs apostrophe has it ( ' this is an apostrophe ) etc . it is just great and, of course, all these great features are only available to premium users which I received as a vouch
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bottom line
my strongest recommendations for this seller he really delivers
and it really works
Thanks for your honest review.