1, Gusteau's guide price is between 4.73 million and 5.47 million yuan.

2. The guide price of Rolls-Royce Phantom is between 7.9 million and 9.2 million yuan.

3. The guiding price of Phantom of the Opera is between 5.05 million and 5.9 million yuan.

4. The guiding price of Obsidian Shadow is between 5.2 million and 6.2 million yuan. Buying Rolls-Royce cars needs to consider personal economic strength and ensure a reasonable car purchase decision.