Yes, junk car buyers will buy cars without keys. They can tow the vehicle with or without the keys. However, offers could be a little more if you have the keys because it makes the process of moving the vehicle easier.
Most buyers expect to work without the keys because they will put the vehicle on a flatbed anyway. If there was ever a slight reduction in payment, it would be around $20 to $50 for any inconveniences such as using a wheel dolly. Although in few, if a buyer ever needed to test the components, they would make a replacement key.
Just make sure when you're getting the quote that you mention whether you have the keys or not. Even though it's not a deal breaker, honest descriptions lead to reliable offers.
