Oh ok. So you will eventually have 2 of them once they're back in stock?
Or you could use it to get the 140w version, but IMO it's not worth using the gift card on the more expensive one. They seem to put them on sale fairly regularly (or at least had been) for around $150 each for just the light. Using the discount you could get the light only for $113, which is only $27 less than what I paid for them on sale in September.