$350 is still hundreds. I don't ever buy a Target gift card at less than 10% off, personally. I subscribe to all the reseller newsletters and get coupons all of the time.
My last Disney Vacation was an Alaskan Cruise costing me about $10,000 for our stateroom, gratuities, excursions, drinks and souvenirs. ~7% of that is $700. However, I purchased those gift cards when the ebay, ebates, target loophole was still working. Saved about $3,500 off of that $10,000.
Also, some people, like myself, being stuck with hundreds or even a thousand dollars in Target gift cards isn't going to be a problem for me. I spend hundreds there a month. I'm sure any non-Target shoppers can find a way to spend the cards they're stuck with as well - they sell just about any daily essential item and at reasonable prices - including free shipping for those that can't make it to a Target with a Red Card or over $50 purchase I believe it is?