Help with pricing

Seems to be anytime i post here it's to complain about lack of sales!
Some said in the past You're charging to little so raise your prices. I did that and I got a short boost then nothing. My question is this -

I'm primarily a photo seller and this is what i need help with. What would people recommend me changing my prices to for all my images. The site recommends $5 which i now go with for new uploads but would people recommend i go lower again to get steady sales or raise my prices?

No sales here for months now even though I'm uploading very regularly, it's very disheartening. :(

Antony you have some really nice images with diverse subject matter. IMHO, buyers come to Pond 5 primarily for footage not still images, and Pond 5 does an excellent job marketing and selling our footage. I don't believe that lowering your prices further will increase image sales. I sell very few still images on Pond 5 but am quite happy with my sales of video clips!

Forget about price..it doesn"t make you sell more...key is the content...