I would suggest you stay away unless you have a lot of time to play games with.
I had started my multi add on there over a year ago. I had some things happen in life that caused me to put flight training on hold for about 6 months. I used some scholarship funds to get the add on and the remaining balance of my account was called into question when I called them to schedule the retraining. They pretended not to remember who I was and they couldn't recall the money I brought in. After 6 more months of phone calls and emails my $1,300 extra has disappeared and I still do not have a multi add on.