It's nice that you have the attachments and they look like they're in good shape. Sadly the vacuum looks worn and tired. It will probably need at least some attention to make it run well. Though it may run now, it's hard to say if it would be wise to run it for any amount of time.
As for a price, it is worth what someone will pay for it. If you wait about a week, someone here may make you an offer. Otherwise, as a ballpark figure, maybe $50 in its current condition. Pay no mind to ebay listings, as the majority of them are vastly overpriced, and have been for sale for a long period of time because of that.