This is too broad of a question to give a simple answer. This will mostly depend on the size motorcycle you are talking about.
When you are saying naked bike I am assuming you mean a standard bike.
I will use Suzuki motorcycles as an example. The other major manufacturers will have similar pricing for similar bikes.
The Suzuki TU250X has a MSRP of $3799. This bike has a 250CC single cylinder motor.
The Suzuki B-King has a MSRP of $12,899. This bike has a 1340CC engine similar to the one used in the Hayabusa
So you see there is quite a wide range of pricing.