Honestly, it doesn't make sense NOT to upgrade. Assuming you can manage to sell one image at a moderate size, that alone should cover your upgrade cost for the year. And as has been pointed out, the more images you have available, the more chance something will resonate with a potential buyer, and the more views you will get. You still have to do the work as others have noted, but I'm assuming you'll be making images anyway, Why remove images so you can post new ones? $30 just is not that much money. When I signed up, I was making nothing with my images. Yes, I could have gone the free route and tried to pick the 25 images I have that I thought would sell, but what I felt were my best images, and what buyers wanted to buy are often different. As it is, my best selling image is not even my favorite from the day I took it, let alone of all the images I've ever taken. You just never know. Don't limit your chances over $30.