Troll or mad?

User messaged me asking for nearly a 70% discount on an item. I refused and blocked them because I don't have time to deal with hagglers. They then made a second account and sent me this message. I've noticed more and more lately people sending very low offers or messages they never follow up on. At this point I'm not even sure if it's worth blocking because even replying or ignoring causes problems. Thoughts? What do you think is best way to handle these people?

User messaged me asking for nearly a 70% discount on an item. I refused and blocked them because I don't have time to deal with hagglers. They then made a second account and sent me this message. I've noticed more and more lately people sending very low offers or messages they never follow up on. At this point I'm not even sure if it's worth blocking because even replying or ignoring causes problems. Thoughts? What do you think is best way to handle these people?