It cost about 20k for most "big" companies to move you, between visa costs, move costs, etc. Then, they know you're going to accept a lower salary and they have

It cost about 20k for most "big" companies to move you, between visa costs, move costs, etc. Then, they know you're going to accept a lower salary and they have no reason to propose you more - companies almost always propose you the minimum that sounds serious. You'll raise it a bit and leave it at that, or at least that's what is expected. most young engineers (h1b target) are paid much less than in the valley, so given the quality of life, the adventure, etc - AND that the salary is anyway higher, they know very few will refuse.