craftgrrl | Print size, other questions....

Hi everyone!

I'm thinking about adding some of my photography to etsy, but with there being soooo many other talented photographers on them offering their amazing prints, I have a couple questions...

1. What is a good price ratio to go by per print size?
I've never sold print before and have access to a very low priced overhead so I can afford to be a little cheaper then others. Also, not to take away from my work, but - I'm no where near as experienced with photography as some others and definitely need more practice so I was thinking I should price accordingly.

2. What is your favorite size print to normally buy?
I'm willing to have different sizes for certain images, but I tend to see 8x10's and 4x6's a lot and wonder if I go larger if it will pay off.

3. Color or black and white? I know some images will look better in BW or in color but does one tend to sell better then the other?

I have a lot of nature photos including wildlife, insects (see icon), floral, and some architecture shots. I really want to sell prints but definitely need some feedback. Also, should I offer matting? I have a nice big mat cutter that I can benefit from, but not sure if people prefer just the print or would want the mat to go with it.

Thanks for the help!!! I will be sharing some other crafts I have been doing soon. Once I get the pics loaded to my comp :)