Add a reasonable budget range

Author: olebole

finance/proposal-calls/cycle3/Streicher-Debian_&_Ubuntu.md

@@ -59,3 +59,7 @@ Due to the continuous nature of the work, the budget should be based
 on a hourly rate. By the experience from the last years, a realistic
 estimate would be 8 hours per month. Using a suggested rate of
 USD 150/hour, this would sum up to an estimated total of USD 14,400.
+
+This would also be the reasonable maximum, covering the real work that
+is done. I would estimate a useful minimum by USD 9,000 (equivalent to
+5 hours per month).