I've used their service, and I have flat feet and bunions.
I've also used custom footbeds made by a local orthotist who made a cast of my feet in person. IMHO, there's no comparison.
If you're going to get a custom foot bed IMO it's very hard to do it right remotely (without actually seeing your feet) which is how Lathrop does it. They can get the outline of your foot right but the critical thing for someone with mis-aligned feet is the height and shape of the arch.
A good orthotist will put your ankle (and arch) in the neutral position and make a cast of your foot in that position, and use the cast to make foot beds with the arch the right height and shape. He'll do that by putting his hands on your ankle and moving it into the neutral position. That can't be done remotely, even with photos of your feet.
