L-1A应该是没有具体工资要求的

L-1A的要求可以看一下
L1 A VISA REQUIREMENTS
A US employer or foreign employer may file the L1 petition, but a foreign employer must have a legal business in the US. The petition must be filed with:
(1) Evidence of the qualifying relationship between the US and the foreign employer which address ownership and control, such as an annual report, copies of articles of incorporation, financial statements, or stock certificates;
(2) A letter from the alien's foreign qualifying employer detailing his or her dates of employment, job duties, qualifications and salary and demonstrating that the alien worked for the employer abroad for at least one continuous year within the three-year period before the filing of the petition in an executive or managerial capacity or in a position involving specialized knowledge; and
(3) A detailed description of the proposed job duties and qualifications and evidence the proposed employment is in an executive or managerial capacity or in a position involving specialized knowledge.

If the alien is coming to the US as a manager or executive (L1 A) to open or to be employed in a new office, also file the petition with evidence that:
(1) Sufficient premises to house the new office have been secured;
(2) The beneficiary has, or upon establishment will have, the qualifying relationship to the foreign employer and the qualifying position; and
(3) The intended US operation will be able to support the executive or managerial position within one year of the approval of the petition. This must be supported by information regarding:
(a) The proposed nature of the US office (size and scope, organizational structure, and financial goals);
(b) Financial information about the foreign entity (the size of the U.S. investment and the financial ability to compensate the beneficiary and to commence doing business in the US); and
(c) The organizational structure of the foreign entity.

办理职业移民申请绿卡的话，3万是少了一些

没有具体的要求，但是，你要满足你跨过经理人的身份才行
参考下面这个， $42000年薪，被移民局Denied
http://murthyforum.atinfopop.com/4/OpenTopic?a=tpc&s=1024039761&f=7474050822&m=4921051161