Tips on buying from a wholesaler

[Christopher Wissing]

I have a property I am looking at in N. California. It is being offered by a wholesaler. I have never purchased through one so I am looking for any ideas, suggestions, tips, etc. Can you negotiate with them? The house is needing some repairs, but have not physically looked yet. I will be next week. He is wanting to give preference to cash buyer and I can do that but just want to know how this type of deal goes, etc. 

Thank you!