Bryan,
it cerainly would be
unique to offer your very own farm grown extracted flavor concentrates
I've read about (and tried to taste) your home grown, extracted liquer that is part of your ry4 blend ... and you modestly don't even advertise that fact

it might take a super-sensitive palette to discern that flavoring ... but if you were to offer your own unique blending flavors, yes I would
buy them
I already have numerous concentrates from Linda at PA/FA ... tbh, some are kind of weak or I'm not blending correctly ... I've got a Cuban Supreme from FlavourArt, but there is certainly no need to use it with your Cigar
juice 
or any other Highbrowbacco
but I might like to experiment by adding some apple/vanilla/choco/whatever flavoring to it ... I've mixed some god-awful tasting concoctions in the past

I figure I can't go too far wrong if I'm using yer stuff
I'm at the point now of experimenting with your percentages, can I tolerate 80% pg, or is 25% just right ? ... it also depends on the
juice, unfortunately too much pg upsets my gut, no matter how flavorful it might be ... this blending isn't easy and you definitely have more than just a knack for it
best luck with your decision