Removal of Braces

So my children were being seen by an orthodontist and both have braces on the top. I have since lost my job and cannot afford the cost of the braces as nothing was covered by my insurance. How much out of pocket would it cost for me to have them removed per child? Right now they have not seen the orthodontist in about a year and the braces have not been maintained. My daughter has some brackets missing or broken and my son doesn't even have the wire in the braces just the brackets on his teeth. They removed the wire for a cleaning and never put it back on. I am planning on getting them SmileByDirect because it is much more affordable. I am a single mother of thee children and the third child is now going to need braces as well. I cannot afford to have all three in braces so if I get the first two the SmileByDirect and the third child braces I can manage (he is going to need the real braces his teeth are by far the worst of the three) I know a photo is required but the question I am asking does not realate to seeing a photo.