This post is just to get you to think. One trick that most retailers have learned is that for many products it is much better to sell it at 99 cents rather than $1, that $1.99 sells more than $2, etc.
Well research has shown mixed results depending on the products however for some products it certainly works well.
Here is a table by a US site which listed people that viewed products compared to those that brought it broken down by price points, the results are quite spectacular, particularly on items less than $2 where they were getting almost double the sales.
If you read more then click here.