The short answer in my opinion is no. In So Cal realtors advertise 1.5% and it's easy (Now that I'm looking around) to find realtors that will take a lower commision.
3% to buyers agent, until they want you to discount your property. You can always counter with a property price reduction along with a buyers agent commision reduction up to 1.5% to help offset what they're asking for.
1.5% to sellers agent. It's very common in So Cal. Most realtors simply list property on the MLS and wait for a buyers agent to come along with an offer. My title company does all the work asside from the counter offer so I'm not feeling bad about the 1.5% at all.
I'm listing my next property with a broker and paying a very small flat fee. Most realtors in my area don't have investors to work with. I'm a very small investor and will only flip 12 to 15 properties this year, but tha'ts a lot of repeat business to one realtor that will propbably never sell one of my properties even if I was paying them 15%. What I mean buy that is they wont find the buyer on their own.
I'm confident there are some realtors out there that really have their head in the game. They have buyers lists, they do open houses, they network, they work their area, etc...
I'm not trying to be harsh on realtors. It's just been my experiance as an investor. The more you can do for yourself the better off you'e going to be.