I'm excited about these cards but also very concerned. I had to deal with scalpers trying to get the PS5 and it was so awful. They used bots that literally bought up all inventory within SECONDS. The websites couldn't handle the traffic and would freeze. The extra awful part was when you finally got one in your cart and hit pay only for the website to say "sorry, this item is now out of stock". Keep in mind people are still struggling to get PS5's while the scalpers grab them all up using bots and overcharge for them.
I really hope we don't have a similar issue with the cards but I'm not feeling confident. Especially since they are exclusive to Target. If there is no option to pre-order and limiting the amount you can buy then I see this being a big mess.