38 days is not a long time sales wise. this month and a bit in the past the sales slowed for different reasons, mostly for taxes though.
you'll want more images than you have
black and white with flowers - i don't consider mixing. the description - make it better. don't tell people you don't do flowers and you shot this at a store.
that's a cool shot, i'd rather see it in color though, however, it's not in focus and its kind of noisy, it may not print.
while an ok shot, it doesn't have depth or color. the light hasn't reached us yet, and compared to others, yours would be overlooked. not to mention there is no descriptions, i have no idea what this is, or why you took it.
i'm not really sure what this is. without a title, it would be a real mystery. too much background, and it's just a building. the greens look odd, its not really in focus and it's crooked.
this is an eye catcher, but its leaning a bit. while its probably distortion a quick pull to the right would fix that.
overall i think your prices are way too low, you should start people in galleries and make sure they all have cover images.
your bio is a mish mash of stuff. forget about your other addresses. tell us about who you are - not that your new, facebook etc. it adds clutter to it, tell us what you do photo wise. this should be counted as google content. you specialize in what? that's what you add.
---Mike Savad
MikeSavad.com