The listings state it will not come with a trailer and it is an exclusive toy for the 2018 Wonder Festial, Japan's biggest toy fair. Of course, as with most Japanese exclusives, it will still be available at online retailers, just at a higher cost. The toy will sell at around the $150 USD price point, from what the listings show.
This deco is in reference to the Gold Lagoon episode of the G1 cartoon, but is also simply a premium deco we have seen in the past for exclusives and lucky draw figures.
The sites currently listing this toy are a seller on Taobao and Australian site Toybot Importz.
Below is an image of an unofficial version with similar deco, it is not certain this to will look like this.
![Image](https://static.seibertron.com/images/toys/uploads/1520876958-mp-10-g.jpg)