What is the average price for fourteen months of Invisalign treatment in Northern New Jersey?

I’m supposed to begin Invisalign the first week of January. I was quoted a price of $4,800 for fourteen months of treatment and am just wondering if this sounds right. Between college, getting my wisdom teeth removed, Christmas and New Years, I really don’t have time to visit different dentists to compare prices. As well, even if I do go for a “free consultation” from another dentist, chances are he or she will want to do x-rays and possibly take a mold of my mouth to see if I qualify for the procedure, which will not be free. Furthermore, I don’t want to go to another dentist and tell him or her my current dentist has approved me for the treatment, as I want an unbiased quote… not one that simply “beats” the one I’ve been given. Thank you in advance.