Chip in carbon seat stay

Iv just had a bike delivered from an ebay seller. Upon close inspection I noticed a small chip in the seat stay (see pic). The bike is carbon. Should I be worried that this chip affects the integrity of the frame or do you guys think its purely cosmetic? Here's a full size version of the best pic: https://photos.app.goo.gl/czKujhfjqvdDQLt87
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but it's very difficult to tell from these little pics. disclaimer etc
Re refund - don't be tight. Go to Halfords, get a £1.99 thing of touch up. Or use some nail varnish - clear of black.