You calculate carefully, after deducting 1000, one and a half years is 18 months, that is, 18000, MINUS 700*4 (months) =2800, that is to say, you have to charge 15200 for training.
As for the later employment, I will recommend companies to you and teach you to write some virtual work experience and interview skills. Of course, it's up to you whether you go or not. Even if you don't go, the money will be paid back on a monthly basis.
I have a friend who studied Java programming at 15, which is exactly the same as your present situation. After graduation, I went to an IT company as I wished, and then I left my job and didn't engage in this industry. I asked her why, after all, it cost a lot of money. She said that she can only learn the basics within four months, and it is very difficult after entering the job. Salary is also an introduction to the industry. There is no foundation at all, and it is particularly difficult to be a big bull in the industry. Even if you have strong exercise ability and can enter a big factory, you won't check your resume.
So, this is not a cheap cake.
If you really need training, please think carefully and make a good plan!