Paying Less May Cost YouWith that being said, I would not necessarily look for the cheapest or the most expensive place. Estheticians price their services based on experience, products being used and overhead. Remember that waxing is a business and everyone needs to earn money.
Also, an Esthetician keeping his or her area clean and sanitary will use more supplies and product. Here's an article that will help you know what to look for to get a sanitary wax: Find a Clean Salon and Get a Safe Waxing.
What's Your Style?There are also different types or styles of bikini waxes (see list). Every style of bikini wax will cost different amounts. For example, there is the basic bikini wax, or American wax where the hair is removed from the outside of the panty line. You may have hair removal from the upper thighs as well. But there's not going to be an abundance of wax being used, and since the service also takes less time, it will not be as expensive.
On the other end of the scale, you have the Sphinx. This is where every last hair is removed from the top of your pubic region right on down to your peri-anal area and your buttocks. When I say every last hair, I mean it. So, there will be more time involved, products used and wax used.
When you get into the bikini waxing designs, like getting a heart shape, you will be paying a considerable amount more because it's difficult and time consuming. I think this goes beyond the technical aspect to waxing and find shaping the bikini hair into shapes to be an art form.