Nope, she was a normal release in the UK in that pose
Ripple was also released in that pose, and Water Lily was released in Seashimmer's pose. Tiny Bubbles and Sea Star were released as pearly babies in the UK as well.
ETA: Oops, forgot the PC
The UK baby sea ponies do vary by where they're sold (they go for more on ebay US than ebay UK for example), but are usually around the $10-15 mark.