Basic Photography is a cheaper and faster version of the Premium Service. As the number of photographs received in the end might be the same, the Basic service is not the best Quality photography. Colors might be off slightly, windows pulls not the best, etc.
SUMMARY:
BASIC: Cheaper, Faster, Not as good quality, Color might be off, weaker Windows Pulls
PREMIUM: More expensive, slower to make, Color accurate, excellent windows pulls, excellent quality