Ok guys, lets get it straight...
1. You cannot control his pricing, if there offers there will be takers.
2. 1000D is not very different from 400D. There has obviously been very good photographs from a 400D.
3. There is no way to determine how passionate he is by looking at his photographs. Low-skilled or inexperience NOT EQUALS not passionate.
4. If you are a professional photographer there is simply no reason to feel threatened. If you have a solid portfolio, you will have clients who are out for quality. (Those doing wedding photographer know this very well.)
if let say if your competitior can go as low as 10SGD per shoot and have nice babes... will you feel the threat??