I doubt this was ever sold by Play.com for £29.99. But at £8.99 for a class 4 branded card including delivery you can't go wrong really.
Includes 5 years warranty
High storage capacity (8GB) for storing essential digital content such as high quality photos, videos, music and more Optimal speed and performance for microSDHC compatible devices
High Quality microSDHC card backed by 5 year limited warranty
Built to last, with an operating shock rating of 2,000Gs, equivalent to a ten-foot drop