Absolutely depends on what you are doing.. 3-4k hits (unique visitors) a day for an ecommerce website at a 1-2% conversion rate is 60-80 orders. I with an ecommerce startup. With that volume I'd be driving a lambo.
But that's not what 'hits' usually refers to, I think.
And with an ecommerce startup, sure, that'd be great.
That should do for us for now. For any kind of AB tests and even to get some money trickling that can be promising enough.