I don't think any one will be interested at his 5 mixed letter domain. Since the name is not pronounceable and easy to remember. And it includes A, E,I,O, U. And still many sinmilar domains are still available for us to register.
Thats right.If it had only two characters five letters domain like raaaa.com,it would have been a good deal but 4 different letters.Not very good domain