It's hard to say why your fees are 60 cents without knowing what your starting price is, or what upgrades you have. But creating a similar listing doesn't cost anything extra. It's just a great feature to use if you are listing similar items. I use it a lot for my cake pan sets which are all identical, even in price, but just have different pictures and sizes. I use this features so that I only have to change the pictures and the sizes, everything else is the same.
As far as relisting, if you want to schedule the item, you should relist through Auctiva and save yourself the scheduling fee. If you just want to list immediately, it doesn't matter how you do it.
I hope that answers your questions!
Roxi