I have a sunlu printer (S9+), it was a very good price, it works well enough, and I consider it was worth it for me, BUT I 100% agree about support. It came with a flex plate with a kink in it, so I couldn’t use the full build area. Reached out to support about it. Just never replied, at all. As far as I can tell the support does not actually exist. Since it was only the removable magnetic plate, I could replace it myself cheaply enough, but if I’d had a bigger issue, it could’ve been a nightmare…