Dog Allergy Shots Nearby

My dogs allergies are going crazy and just went to get her another allergy shot, cytopoint. It was $205, don't know how bad she will be this year I've only had her since November. Just wondering is there any lower cost vet someone can suggest for this particular allergy medication. It's supposed to last 6 to 8 weeks. She's 73 lbs and so she needs two 40 mg bottles.