When you get a lot of money for the job you

1) When you get a lot of money for the job you have it well-paid.

2) You found a good job. You want to get it. You apply for this job. The variant send a letter can be also ok, but you should add a letter of application or cover letter. Moreover, nowadays very often you should apply online, hence, you cant send a letter. The last variant you think of it a lot is not the right way. If you do nothing, only think, instead of applying, youll probably loose this job.