the product images and the title seem to conflict with each other. how many 10oz bottles does this product consist of?

My product came in a twin pack of two 10 ounce bottles.

How does the Replenish compare to the Pure-Moist line? Which one is better for keeping eyes from getting dry?

I believe the formulations are different enough between these two solutions that it's an apple to oranges comparison. Pure Moist doesn't work at all for me. My eyes were dry and irritated for the entire couple weeks I tried it after running out of my supply of Replenish. I wear Cooper Vision Proclear Toric lenses and when I told my optometrist my eyes were much more comfortable using Replenish she was not at all surprised. She mentioned that the Proclear lenses are more compatible with the Replenish formulation. I'm sure Pure-moist may work great for some types of lenses- so it's probably a good idea to ask others using your same lens-type or just try various brands until you find one that works best for you.