Gradification

Tangentially related to decision-making: for all those accepted, have you found a relative uniformity to your acceptance offers (i.e., roughly equivalent scholarship values), or has one program offered you significantly more/less than others? If the latter, what do you think caused such a discrepancy?

Was curious to know how common stipends are for these professional degrees, outside of programs like Princeton SPIA and Yale Jackson? Has anyone ever successfully negotiated a stipend?