Amazon Master Cards! Has anyone had experience of these?

Now Visa are no longer being taken by Amazon I am looking around for a Master Card to use for Amazon purchases. Saw that one came with a quite high fee but another appeared to be free. Wondering if it is trouble free and easy to use. Otherwise I am going to enquire whether my bank issues Mastercard. I really want to avoid using my debit card when shopping online. Interested if anyone has had or has one.