What is the least I can spend on a decent Kawasaki Ninja motorcycle?

Ive wanted a bike for a while but havent been able to afford it with college loans and such. What do you think is the cheapest price for a decent one?|||Do not waste your money on a 650R. It is over priced and under powered. I would get the 500 before the 650R, the performance to cost is much better. But for about $2500 you could get a used 250. They sell new for about $3000-$3300.|||$2k used.|||You can buy a used ninja 250 for around a thousand dollars.. If you want to buy a new one for cheap you can get a ninja 650r for about $7,000. You can get a used 636 in good shape for around $4,000.|||Get a Ninja EX500R they are cheap to buy cheap to inshore and they are grate for new riders. Don%26#039;t get a 636 they have too much power for a beginner besides they are more expensive and the insurance is more.|||My 250 had 800 miles on it and I stole it for about 2100. I%26#039;ve probably already got 500 bucks back in the gas I%26#039;ve saved. 250%26#039;s are pretty good to. I%26#039;m wanting some more power and would love to have that purr bigger bikes have but I%26#039;m content with what the 250 has to offer.|||Ninja 500 show up on craigslist every now and then for $1500 - $2000... which is way low, and the comment reads %26quot;need money%26quot; or %26quot;wife says get rid of it.%26quot;