Thats true! Although, in order to save some money, there is a bolt and nut place pretty close to my work where I can take all the sizes and get stainless bolts and nuts for quite a lot cheaper than I think the sets come in. Buying the set will save me quite a lot of effort, but I know less effort = $ and since I will rather put the spare money I have into more important things, I will have to make the effort. I have started putting all the bolts, nuts and screws I've taken off the bike into separate packets and labeled them to not get too confused where they go. It takes some time but will save me some dough.
Thanks for the tip though! It's appreciated.