Range facet with different gaps/steps in Solr

Currently the request is

{
  "query": "*:*",
  "facet": {
    "prices": {
      "type": "range",
      "field": "price",
      "start": 0,
      "end": 100,
      "gap": 20
    }
  }
}

I need to retrieve the counts for the ranges

0 TO 5
5 TO 10
10 TO 20
20 TO 30
30 TO 40
40 TO 50
50 TO 100
100 TO ?(NO END)

How to should be the request to retrieve the counts for these ranges?

The range parameters listing shows you the available parameters and their meaning. To get 5 as the gap, use "gap": 5. To get the entries that lie outside of your ranges, include "other": "after":

  "type": "range",
  "field": "price",
  "start": 0,
  "end": 100,
  "gap": 5,
  "other": "after"

For your custom ranges, you'll need to include the ranges explicitly. You can't use other together with range, but there are ways around that:

  "ranges": [
      {"range": "[0, 5)"},
      {"range": "[5, 10)"},
      {"range": "[10, 20)"},
      {"range": "[20, 30)"},
      {"range": "[30, 40)"},
      {"range": "[40, 50)"},
      {"range": "[50, 100)"},
      {"range": "[100, *]"},
  ]