Grah1 I took a look online for any reviews of the site and found nothing negative, but then again all the links I visited orginated there, so that isn't much of a help to you. They also appear on a site called "Angie's List" which rates various services here in the US. I don't know if she offers a free trial, but you might want to check there as well.
Also, it may be that one of our friends here may be a member of AL and can take a look on the list for you. She's pretty much "right on the mark" with her ratings.
Admittedly, I didn't read too much about them, being that they're mostly "blowing their own horn", so to speak, but I hope they're legit.
Bill
Epiphone Les Paul Studio
Fender GDO300 Orchestral - a gift from Amy & Jim
Rogue Beatle Bass
Journal: www.wheretobud.blogspot. com