probably something like 

Model.NodeById(1150).Descendants("Car").OrderByDescending(x => x.GetPropertyValue<double>("price"));

Thank bro. Look, to save it, show this error: 

error CS1977: Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type

Oh right think you using dynamic model instead of IPublishedContent, no worries, try using price as a dyanamic field.

ie.

Model.NodeById(1150).Descendants("Car").OrderByDescending(x => (double)x.price);

I have this code:

@inherits umbraco.MacroEngines.DynamicNodeContext

@using EasyTumb;

@using umbraco.MacroEngines;

@using umbraco.NodeFactory;

@using Refactored.UmbracoViewCounter;

Model.NodeById(1150).Descendants("Car").OrderByDescending(x =>(double)x.price);

But... don´t work!

I get this error: 

macroScripts\635072569961203807_DealerPagination.cshtml(61): error CS1977: Cannot use a lambda expression as an argument to a dynamically dispatched operation without first casting it to a delegate or expression tree type

yeah... using dynamic causes problems with linq.

I'd go for something like the following so you have properly typed objects

@inherits umbraco.MacroEngines.DynamicNodeContext

@Umbraco.TypedContent(1150).Descendants("Car").OrderByDescending(x => x.GetPropertyValue<double>("price"));

Thank you bro for you time. :D

With this:

@inherits umbraco.MacroEngines.DynamicNodeContext

@Umbraco.TypedContent(Model.Id).Descendants("Car").OrderByDescending(x => x.GetPropertyValue("price"));

I getting this:

\macroScripts\635072642210605166_DealerPagination.cshtml(3): error CS0234: The type or namespace name 'TypedContent' does not exist in the namespace 'Umbraco' (are you missing an assembly reference?)

Change this 

@Umbraco.TypedContent(Model.Id).Descendants("Car").OrderByDescending(x => x.GetPropertyValue("price"));

to

@Umbraco.TypedContent(Model.Id).Descendants("Car").OrderByDescending(x => x.getProperty("price"));

Thank... but the problem is this: error CS0234: The type or namespace name 'TypedContent' does not exist in the namespace 'Umbraco' (are you missing an assembly reference?)

Hi, looks like you are using a Razor macro rather than MVC which is why you don't have TypedContent. However you can do something similar in a Razor macro by using uQuery (Umbraco 4.8+):

@inherits umbraco.MacroEngines.DynamicNodeContext
@using umbraco.MacroEngines
@using umbraco;
@using umbraco.NodeFactory;

@{
    var nodes = uQuery.GetNode(1150).GetDescendantNodes(n => n.NodeTypeAlias == "Car").OrderByDescending(x => x.GetProperty<double>("price"));
}

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