Are these real?
Warning, Warning Will Robinson!!!
I know new varieties pop-up each year, but this is the first blue I've seen. You will not know for sure for several years, and it will be very difficult to get your money back from Thailand.
And free shipping no less.
Photoshop for sure and one dead give away is when you google the name the only results are this thread and the sellers offer on Ebay.
Plus I guarantee if there is to ever be a legit blue or black it will for sure show up at the trusted sellers sites and here.
I can buy a blooming blue Hydrangea and next year it will bloom pink for me. If the color is accurate as pictured in your links I believe its something in the nutrition and/or Ph of a known variety versus a new hybrid. Aluminum Sulfate and a high potassium fertilizer is what I understand keeps a Hydrangea blue. Food for thought.