Don't purposely buy something if you don't need it, just to take advantage of the sale. I fell for this "market strategy" on 3 different occasions and was severely disappointed. Someone is going to say "free is free, be happy" but I am just saying don't force it. If you were going to make the purchase anyways, its a nice added bonus.
What you consider "special/nice" might be different from AG perspective. What I consider nice would be BF BlackIce or Pinnacle Sig Series II, but it is not likely to be the nice gift. When I purposely bought something to take advantage of a "free $50 item", I was not expecting to get some Stoner glass wipes, Interior protectant wipes, Glass clay spray, Griot Rubber polish, that all equaled $50, rather than a $50 item itself. This is not a rant or whatever, it's just a heads up so you don't set yourself for disappointment, like I was.