All available items are always listed here on the website. Prices are posted with the items. Prices are not given out before restocks. Prices vary on stone type, design type, and cost of materials at that given time.
Going to a local jeweler is the cheapest and most effective way to get your ring size. Ring sizers are available on Amazon for only a few dollars and work excellent for getting your size. When it comes to wide band rings I always recommend sizing up a half size. If you have a fabric measuring tape at home google ring size charts and you can figure out the size you need that way as well.
I try not to make any earrings "heavy". I am very aware of the working woman and wanting to make sure your earrings are comfortable to wear all day long. As for size, I always include a measurement in the listing and a photo next to a coin for a visual size example as well.