Hello Ray and welcome to our family, you have come to the right place to learn much about the african grey, you are about to embark on a wonderful journey of a lifetime so let the parade of questions begin, oh sorry they already have, we have many knowledgeable members who will give you their advice.
If you do go ahead and get this grey you will have to commit to a certain amount of time and attention for this bird, if you are the type that can handle multiple committments then I would tell you to go ahead but if when you do have more children that would decrease substantially the time and attention this bird would get then wait until the children are older.
Regarding the 2 year old child, yes you will have to protect that child from getting too close to the bird, maybe limiting how much the bird is allowed out of the cage for most greys do not like young children because they are so quick moving, it scares the bejesus out of them and then the bird may bite.
That price sounds reasonable considering the cage and bird stand are included, the grooming additions are icing on the cake.
Please do consider this carefully as we do not like seeing a grey go into a new home only to end up having to go to yet another home, its not fair on the bird.