Cash back at closing??

[DJ Cummins]

So we have an appraisal going on a house right now and we might be making an offer on a house next week. My question is, how often does a seller agree to cash back at closing? We are thinking we are getting the property for 10-20k under what the appraisal will be. Do we just offer 10k more than asking, and request 10k back at closing? Does this work? What type of options do I have? Any input is helpful!

Thanks!
DJ Cummins