Your listing the current prices, not what you paid for them when you purchased them, for instance you listed vBShout at $94.95 when you purchased it in April of 2010 you only paid €37.5 which is cheaper than the 3 month license currently.
That is based on always paying the full price for each mod - I checked your payments and the amount Fillip said was correct. Bear in mind we have had various coupons and specials that you have taken advantage of, and the price of some mods have increased over time. If you want I can post/PM you a screenshot of your transaction log showing exactly how much you paid in each of your transactions - you can of course check your PayPal account manually and add up what you paid there as well.