回複：請教pjiang，863211等前輩。

1）從B2轉回到 學校類別的H1B，費用大概多少？ 會不會比申請公司占名額的那種H1B 便宜些？
-The fee is the same, not different.

2）由於postdoc的薪水很低，在申請H1B的時候，還會不會像申請公司H1B時候對薪水有“高於本地prevailing salary”那樣的要求？
-Yes, it still applys to the prevail salary, but this prevail salary is based on your postdoc position code, not based on your original company job code. So, it should not have a problem.