How to Choose an SQL Database for Simple Data Preparation & Analytics
Questions to ask could include:


What fits well with your current skills? (That might make it 'easier' to use.)
Is your focus on getting something working soon, or on developing new skills?
What is the cost of your choices (money, time, effort, unfamiliarity, etc)?


With your list you do emphasize cost as a factor and the database is not expected to be huge.  So, you can use the free version of some vendor product (such as SQL Server Express), or use open source offerings (such as MySQL, PostgreSQL, etc).

But you will pay, of course, for any choice.

Once you know where you want to spend your resources (which only you can answer) you should be able to discard some of the options.