[Feyd]

105 components unfortunately will be on bikes that are way over this guys budget.

105 on an aluminum bike will be $1400+
105 on a carbon bike will be $2300+


His best bet is to buy used, or buy something that he can afford and see if he really likes it before he takes the plunge. When the time comes, if he likes it enough he won't have to justify spending a few grand on a new bike.

IMO as a beginner, components don't come into play as much. I'd say that he should try to spend $500-600 or just go full boat at the $2000+ level... everything in between will be no better/no worse than those ranges. When you start to drop below that $500 level on a new bike you'll definitely see the faults. When you start to get over that $2,000 level you start to get into some really nice stuff.



*edit*

Totally forgot, but you might try bikesdirect.com. If you aren't a brand whore and are looking for a Trek/Scott/Specialized, etc., lots of people over on roadbikereview.com rave about motobecane bikes. Just keep in mind that you'll spend ~$100 having a shop assemble everything for you once you recieve the box. Be sure to get measured/fit prior to purchasing so that you know what size you need to order.