Big printing flaw on all 10

I thought I'd give these a try as a new item for my traveling roadshow, and all 10 arrived with the left side a different color than the rest of the sticker (printing flaw). When I reached out to Sticker Mule about this, they told me "this happens" with holographic stickers without fully understanding or taking the time to address the issue. The quality is good but I can't sell something that is this messed up, and the response is not at the level I'd expect from a business who does this full-time. Disappointed.