How much is 5 ounces of vodka?

It's 5 ounces dude! or if you are looking for mL then it is 147.867648 mL!

Or, are you asking the cost? Then we have to ask what brand you are asking about? Higher shelf brands cost more...

Where are you shopping? Some liquor stores cost more than others...

Last bit of information needed to answer your question... were you drunk when you asked it? lmfao!