Hi Bunny1999,
I’m not sure what you mean by “seriously selling” although I do agree that some ebay sellers are more knowledgeable, experienced, and reliable than others.
Todd is the owner of Catawba Valley Foam so he would certainly be able to tell you if he is selling toppers on eBay.
While I can help you narrow down your choices to the suppliers that I would consider to be reliable and knowledgeable (which includes the ones on the list I linked) and with “how” to choose … I don’t make specific suggestions for either toppers or suppliers because there are too many variables involved that could affect which topper or which supplier is “best for you” (regardless of whether the same topper or supplier would be best for someone else) based on all the criteria that are most important to you. It would also depend on the specific type of topper or the type and blend of latex that you are interested in, the knowledge, experience, and guidance of the supplier that you are dealing with, their prices (which can fluctuate and which I don’t keep track of on an ongoing basis), how they compare to other suppliers that are selling the same type of topper with the same thickness and/or the same cover, and their return or exchange policies, which can all be an important part of the “value” of a topper purchase (price is just one part of the “value” of a purchase).
A knowledgeable and experienced supplier will also be more familiar with the specific toppers and firmness choices they have available (which can also change over time) than I am and different people may also have very different opinions about which types of material or the type of topper they prefer or which supplier they are most comfortable dealing with so beyond narrowing down your options to choices that you can have some confidence in … these are decisions that each person needs to make for themselves based on their individual preferences and their conversations with each of them.
There is also more about the different types and blends of latex in post #6 here that can help you make more “apples to apples” comparisons.
Phoenix