I saw these a couple months ago. After our last trip with trying to get wood planks under the one side to get the TT level I searched and found these easy to use trailer levelers. I contacted Anderson...
A little pricey for me as well. I've always used a piece of 2x8. Only once have I had to stack boards because the site was so bad. I went later that day spent about 30 or so bucks on some tri-level blocks. They were so aggravating to use. Later that week my dad told me what he used to do, if you are on a dirt/grass site, take a water hose to the high side and spray water around the tires until it sinks to level. Of course it wouldn't work in a clay area, but in sandier soil it would.