A friend told me that he could tell the suits are cheap because they are very shinny in the sunlight. I was wondering is there any product that can take out this shine and make my suits appear normal! I tried to return them but since they had been altered I was stuck! I paid almost 500 dollars for them and can't afford to purchase new ones at this time. Is there anything I can do to avoid being laughed at, at work?

I'm very sorry, but this is not going to help. Please read:
http://www.pburch.net/dyeing/dispersedye.shtml
Dyeing polyester is no fun at all, and is apt to make the suits look worse, not better. It might totally ruin them.

The guy who was laughing at your polyester suits would probably laugh at any suit that cost $250. There is always something to be snobby about.

Wool is more comfortable even in summer, believe it or not, and looks better than polyester, but the simple fact is that you cannot afford to buy expensive clothing until after you have received a number of paychecks from the new job.