The cost of party bus rental can vary depending on several factors, such as the size and type of the bus, the duration of the rental, the time of day or week, and the location. Some companies may charge extra for amenities like a sound system, lighting, or bar. To get the best deal for your budget, it's important to shop around and compare prices from different rental companies. You can also negotiate a lower rate by booking during off-peak times or by renting longer. Finally, read the rental agreement carefully to understand what is included in the price and what additional fees or charges may apply.