If my item doesn't sell, can I relist it later on without being charged? For instance, can I turn off automatic listing somewhere and then if I relist the item at a different price down the line, do I get charged?
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.” Søren Kierkegaard, Danish philosopher (1813 - 1855)
Automatic relisting for auction items, only happens for a short time for NEW sellers.
As you will have a monthly allowance of items you can list for free, if an item relists automatically, just end it. It sill stay in your unsold items and can be relisted when you like.