Finding it hard to decide?

What about a Gift Certificate.

You select the value and let them make the choice.

(other amounts available see "gift certificates" category)

Once purchased the certificate's code(PIN) and a PDF copy is provided from both the checkout and your email confirmation.

The Gift Certificate can be redeemed in the discount coupon section of the checkout. Enter the PIN in the "Coupon Code" box and the certificate amount will be automatically deducted from your total purchase amount.