Jasemer - I know you've got your mind made up, but I just have to say that even if you get the full $600 for this gift certificate, you won't remember 2 years from now what you did with that money, but you would remember your meal at Alinea 10 years from now. Now, I don't know what your financial situation is (or if you're on the verge of something catastrophic, like eviction, or you can't afford medicine), but barring financial catastrophe, we all have bills that we'll be paying until we're toes up. Trading a gift certificate for $600 you don't currently have can seem tempting in the moment, but in the whole scheme of life, it's not a lot of money. Please keep that in mind.*
*I say this having passed on eating at El Bulli 9 years ago, hoping to save money because I felt guilty, having law school loans and other bills to pay. Do I remember what that saved money went to? No, but I would have remembered El Bulli. My workload since increased, I didn't have time to go back, and now, it's closing. Alas . . .