You get what you pay for, this isn't a cheap hobby, wouldn't hurt to reach out to some troopers close to you and see the difference in armor makes.
Just don't make a rash decision, do some research, look through the vetted sellers, take a look also at build threads of particular armor (you can find their names at the top of build threads) It's great to be excited and want to get into this hobby as soon as you can BUT many find out the hard way that they should have taken their time with research, it's the most important part.
But like others have said it's your money