As mentioned by SlashGear, Caviar also provides other customization for a variety of smartphones. However, Galaxy Note 9 this is the gold-plated Special Edition the most expensive they've ever made.
Galaxy Note 9 artificial gold plated this Caviar valued RUB 3.870.000 or about $57.953. It is the price of Galaxy Note with 128 GB of internal memory. Whereas for variants of 512 overlaid with gold valued RUB 3.890.000 or about $58.260.
If you don't mind bringing your smartphone with weights one kilogram or attract the attention of thieves, then Galaxy Note 9-made Caviar is suitable for you. If not, maybe you should be satisfied with the Galaxy Note 9.