My tours mandibular bes (the bones my tongue lay on) are to big for me to fit bottom dentures, so have to have half one side removed i'm needing the cost of the surgery?

Varies: Costs of procedures vary as to the intensity of the procedure, the severity of your problem, the training/skill/experience of the practitioner, and the geographic area in which you live. Health care is a service, not a commodity. It's not like buying a can of soup at the market. Like snowflakes, as no two patients are alike, no two health care procedures are alike.