I found your prices rather expensive aswell, but I changed my mind when I started to work. Free time is the most expensive thing on earth, especially when you spend it building five time the same set and searching for bricks on BL. So in fact, they seem rather cheap now.
I also think that they might seem expensive because they do look a lot like what TLC would have come up with (the sailbarje is a good exemple, they were really close in term of design), so people tend to think a 200 piece set should cost the same price as a real Lego 200 pieces set.