100% of my traffic is Adwords PPC under 10 cents a click. For every 200 clicks I get one sale, disregarding my profit. Is this a good stat?
Taking in account are you happy ? If so then great. 200 clicks for 0.1 is $20. Every 200 visits = sale. Could be better, but really acceptable.
Well, this depends on the return you recive on making a sale. So, if your sale is worth anything over $20 to you, then this is good as it represents an operating profit (not to mention returning) visitors.