Think about it this way. Top doctors in Europe charge around €3-5/graft. 4000 grafts would cost €12k - €20k! Top clinics in the USA are double that. So when we see 1,600 including hotels, it raises a huge red flag.
There are more affordable options, of course. Bicer and Demorsoy, for example, are around €1.5/graft. Once you get into the "all inclusive & unlimited grafts" packages, you're not working with doctors, but technicians instead.
Be very careful at this level of clinic. You're in dangerous, high-risk territory... this is the level where most of the transplant failures come from. The last thing you want is to trade one set of hair problems for another. Do your research!