I would say use some type of pricing service, and also use AirBnB to offer discounts to the first people to book.
Overall, use a second airbnb account and search for the same bed / bath / guest / amount that your listing has and see how it is prices vs the competition. Usually, the cheaper ones show up first. So if you are 5 pages back, my guess it is priced higher.
What I do is use a non hosting account to look at different days / weeks / or month at a time and search for my listing and completion. I do mine per month, and offer a different discount each month to be competitive.