Hi and welcome. You are right to research all you can before getting a grey.They are fantastic birds but as you appreciate are a big commitment. read through some threads hear and get an idea of the problems some people have and also the fun and companionship greys can offer. It is a possible life time comitment . Imagine a 2 year old who does not grow up. As for cost, think expensive.Possible vet fees, and bird vets dont come cheap, toys,yes you can make some of your own, some people on hear do a lot of that.Quality food. Harrisons pellets whic I feed cost £30 for a 5lb bag, this lasts about 7 weeks, then fruit and veg. It all adds up. On saying that I would not be without my grey Charlie. Good luck with the research