Hi- I just finished a five month online COVID study with 20/20 that was supposed to last 6 months, but that is okay. I got paid $50 for each month. When I started the study, they told me they were paying me with a Tango card. I think they gave me a link to Tango, and they had a bunch of cards to choose from. I got $50 each month on an Amazon card which they sent me the code for about a week after I had finished answering questions for that month. I think maybe they had a virtual VISA too. They had a ton of cards to choose from though, and it was not hard to select a card. The only month I had to spend a fair amount of time was the first month, but I thoroughly answered the questions she gave me about how COVID had affected my life. She thanked me for going into such detail. Every other month, it only took me around a total of 20 minutes each month to answer the questions, and I got a total of $250 in Amazon cards.