What software do you use to help you with pricing?

I am looking for software to help monitor profits/margins on daily basis. I need a tool or a piece of software to calculate exact profit for each product, taking into account cost price and various fees depending on the channel. I would like to be able to see with one click how the profits will change if I change the sale price and at what price you would be actually making a loss. Some reporting tools such as product performance over time would also be valuable.
I suspect the reply would be to use a spreadsheet. I would however prefer something with more user friendly interface that automatically does it all, rather than having to pull data and play with formulae. If nothing else is suitable, I may consider a ready made spreadsheet template. I am really hoping to avoid having to build one myself. And just to clarify - I do not need an accounting programs (I suspect some would do it) or order management software or anything else complex. Just a simple tool to use daily, which can show product prices and profits at a glance to help me with repricing when needed . Does such thing exist? What do you use?