I have the good news and the bad news regarding what is going to be happening to my products in the future. (January 2021 and later)
First, I do have a store at Renderosity. HOWEVER, due to low sales, I'm still limited to ONLY THREE PRODUCTS at a time. (Hopefully that will change in the near future, but I'm not holding my breath.) This means, since I already have two products in that store, that only one item can go there. I have several packets of photos that have NOT been previously published which are likely to go up first. (Those would be the most likely to generate enough income to allow me to publish everything once the 3 item barrier is removed, which is why I'm thinking of that option.)
Secondly, there are a number of items that have already been to Renderosity and cannot go back. (They have a rule against things published there twice.) These items are "Campsites", "Beach 1", "Beach 2", "Beach 3", "Sunset Drama Skies", and "Vintage Buttons 1". At this time, I have no idea what I'm going to do about them. Retirement is possible. Or maybe I'll find some other place to publish them, later. They're all .jpg and .png, which means they'll work in both old and new software, as long as .jpg and .png are possible to be used.
Basically, if there is something you really want, take advantage of the big sale here they're saying will happen in December. I cannot guarantee what will be available (or even when) in the future. I'll try to update here when things are more settled. Or when something has found a new home.