I have created a test database of my existing database. Now if i install the new module in this test database for checking the functionality i can get, will i be charge for it or will it be free for some time before i buy it. I do not want to waste money on any module purchase if i do not use it.
Also i have few module which i have purchase but not in use. Can i uninstall those and will that reduce my yearly charges(amount paid to odoo).