I didn't have a good experience with them.
I pre-ordered a Radian XT SL from them in like August.
The date they were supposed to arrive changed like 3 times, they never emailed me about any of it and only updated the web page the first time, I had to email them then wait 2 days for a response every time my 'due date' came and went.
When I was told I should get my car seat by the 24th of November and didn't, I checked the website to see if they changed the dates, and it still said they would arrive late October/ early November, I emailed AGAIN to ask, and was told they had no clue when they would get them in (so nice of them to email on the 18th, when they were supposed to have them, to tell me they didn't get them)... so I canceled and went with Diapers.com where I got the seat for cheaper using a price match, and the seat was here in 2 days.
I was all about buying from them, even if it cost a little more, to support the cause. But, I will never order from there again, communication was forced- if I hadn't emailed, they would have never emailed me about the repeated delays.
The cause is to help get good car seats for people who can't afford them... but here I was with my son in a seat *I* didn't feel was as safe as it could be, waiting on them to ship my seat. I was naive and assumed if they didn't have the seat no one did, I should've researched sooner, because apparently people had the seat 'a few months' before I finally got one.
I'm sorry I wouldn't recommend the site to anyone.
Also, if you click on the 'award' she has on her front page, it will take you to the site of the Women's Businesses or whatever it is, and you can read customer comments there.