I am recently engaged (this will be round 2 for me!) and I have been so annoyed trying to just look online to find a price range of different venues, but they seemed determined to make you contact them. I would at least like to know a price range so I don't fall in love with a place out of my budget . So I thought I'd share the prices I've come across. Keep in mind this is as of Summer 2014.
Southwind Hills, Washington $6,500-$11,000, must use their food and alcohol services.
Fossil Creek Ranch, Ada Basically a minimum of $1,000, they have catering or you can cater your own, must use their alcohol services
Chateau on the Grove, Norman $4,000-$5,500, I don't remember their food and drink policy and can't find it in the emails
Journey to Healing, close to Durant $750, bring in your own food and alcohol, great for DIY, but they don't offer any wedding prep services, it is all on you!