Being on the front page will not even guarantee that many people liking, leaving comment, and subscribing; moreover donating ink to your series. Banners and staff's pick features are not even last over a week normally, and Tapas traffic is not that big.
1000–500 dollars are a fortune, especially for some third world-er like me. I think not even many professional or premium creators here can gain that amount of money from their series alone in a month.
I think if it is like 10–50 dollars, people might try to buy it. However, that day is also when I lost my faith in Tapas. "Staff's pick" should never be "Paid for" ideally, that is like implying quality is depending on who gives you money.
I do not think such method will work well on Tapas overall.