I've tried a number of commerical chai's that target the coffeehouse market including Sattwa and was never satisfied. So especially since you manage a "coffee and tea" shop, ought to be blending your own chai. Then brew your own concentrate. That way both the blend and sweetness level is exactly what you want. My chai blend is comprised of Assam and Darjeeling single estate India teas and 9 spices (no powdered spices all whole or chopped). Brew for 1/2gal concentrate using 100gr chai blend, 56gr honey, 114g dark cane sugar, just off boil water. Infused 30min. Strained through coarse SS strainer then Swissgold. Blending and brewing your own chai concentrate does indeed take more time and work, which is true of most things highest quality.
Don't ask my specific ingredients/ratios, it is indeed a trade secret since in addition to roasted coffee I wholesale my chai blend.
My Chai is the way to go. They have a couple different choices... one being My Chai and the other being My Chai Original. The (regular) My Chai should put you at the same price point as Oregon Chai and have a VERY similar profile... Actually a bit better. You should not have any customer rejection as you most likely will if you switch to Third St, Chai Co., Dragon Fly, etc...
Anyway, just my opinion.