Great photography is critical at any price point. You need to draw in a potential buyer and create an atmosphere which is inviting and creates value in excess of your asking price.
As others have said however, the best pictures won't bring a buyer if you are overpriced, so the buyer has to see value at your price point.
4. Marketing materials, flyers, virtual tours.
5. Ongoing market knowledge.
Ongoing market knowledge is critical in knowing what the competition is, what is selling and why and what is sitting. I tour comparables in my market for my listings regularly to make certain we are well priced, marketed & staged. If you need a referral, let me know. I have good contacts in San Diego.