I don't purchase anything, regardless of the price, without thourghly checking out the product.
I have also found that the premium stuff can also have "issues".
My stock battery in the 06 still had a little bit of life in it but not enough for me to trust it as much and as far as I sometimes go.
Others should check, as I did, prior to buying anything. This happened to have a good warantee from a National Company and like I said compared favorably to the origional battery that lasted 5 yeats.
I'm not sure that "skimping" is the correct term for saving some bucks when possible.