This all sounds like a good deal, and it is. I am within my living allowance when I don't spend more than $6 USD per day. There are currently 57 denari in a dollar, but there were 63 when we arrived last November.
Shopping here is still a little bit intimidating for me. All the items are located behind the counter, where the proprietor is. Macedonians ask for what they want. Well technically, they don't ask. The verb used directly translated would be, "Give me". In the U.S. this would most likely be considered abrupt or demanding, but here it is the proper way to indicate what you want.
When I enter the store, and the proprietor, who might be sitting on a folding chair, stands expectantly, watching me with his hands behind his back, of course I get nervous and forget every word I know. I usually ask for permission to come behind the counter, and they always oblige me.
Besides, I like to browse. I don't always know what things are, or what I "need". They always oblige me, looking sympathetic but mostly bemused, at what is probably very odd shopping etiquette!