Cost of iPads

For my homework I had to research the cost of the iPad and mini iPad - I had a look at Tesco and their prices are:

Mini iPad 16GB - £369.00
Mini iPad 64GB - £529.00

iPad2 16GB - £429.00
iPad2 64GB - £579.00

I am sure that if I had shopped around there might have been some better deals out there but time ran out.