Hello Grant!
Welcome back again to planDisney! You seem to be a big fan of Walt Disney World and love learning all about it! I'm glad that you are here again and I'm excited to answer your question!
Disney Gift Cards are one of the best ways to pay for anything when on vacation at Walt Disney World Resort! You can absolutely use your gift card to pay for your black
MagicBand+ when in the Parks. It is an accepted form of payment at any Walt Disney World Resort hotel, the physical and
online Disney store, and various merchandise and food locations in the Parks. I hope you find the MagicBand+ you are looking for. It appears that the
black MagicBand+ is out of stock at the online Disney store but I'm sure if you hunt around the Parks you will find it. A tip that helped me in my shopping on my last trip to the Parks which I want to share with you is to speak to the Cast Members to help you find a certain item! On my last trip, I spoke with the Cast Members at the front desk of my Disney Resort Hotel and they had a tablet that was able to search all of the shops on the property and let me know which store had the item I wanted in stock and even how many there were! It helped me save some time and I did find what I wanted with no problem. I suggest you speak to a Cast Member in one of the Park merchandise shops to help you if you can't find the black MagicBand+ that you want.
I hope you find your perfect MagicBand+ so you can use it for your trip! I'm sure you will "rock it."
Let me know if you have any more questions.
Happy Planning!
-Nimmy