Measure to build variable starting price

[Anonymous]

Hey Community

I'm working on a PBI report with data about cars and their prices.
My table consists of the following columns:

• YearMonth
• VehicleID
• Make
• Model
• FuelType
• BodyType
• Type (new car, used car...)
• km
• HP
• Age (m)
• Price 
• Date

  The dashboard viewer can filter the data using slicers (bold text in list)
  What I want to do now, is to build a measure that calculates an average start price (for the first month in the selected time period) for all the cars in the filtered set.

  Using this start price I want to show the development of the prices in percent over time (by month).

  I build a measure that calculates the start price:

oneStartPrice = CALCULATE(AVERAGE(One[Preis avg]), DATESBETWEEN(One[Date], DATE(YEAR([minDate]), MONTH([minDate]), DAY([minDate])), DATE(YEAR([eomMinDate]), MONTH([eomMinDate]), DAY([eomMinDate]))))

minDate = CALCULATE(MIN('Calendar'[Date]),ALLSELECTED('Calendar'[Date]))

but this measure is time-dependent and wont work (returns a blank) on other months than the minimum month selected.

is there a way i can make this measure to work for all the months? 
thx in advance, tanja

[lbendlin]

You may not want to use the term "dashboard" here - dashboards don't have filters that users can interact with.

Please provide sanitized sample data that fully covers your issue. If you paste the data into a table in your post or use one of the file services it will be easier to assist you. Avoid posting screenshots of your source data if possible.

Please show the expected outcome based on the sample data you provided. Screenshots of the expected outcome are ok.

https://community.powerbi.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/1447523