You're just starting out so no reason to try to get the most expensive decoys. Most of us started out with a dozen or half a dozen some old duck hunter gave us.
This is the way I look at it after having done the whole buying cheap decoys thing for literally my whole hunting career (12~ years) up until I decided enough was enough this year. (I am counting GHG as cheap decoys, not because they are inexpensive but because they cheaply made).
If you don't have the funds to buy quality decoys then you can just stop reading here but if you do then keep reading.
If you buy a dozen nice decoys to start out with and you end up loving duck hunting you will have those decoys for a long time. If you buy cheap decoys to start out with and you end up loving duck hunting you will either have to or want to buy new (better) equipment in a couple years.
If you buy a dozen nice decoys and hate duck hunting you can sell them for a good price because the nicer decoys tend to hold paint better, not crack as easily, etc. If you buy cheap decoys and hate duck hunting you are going to end up selling them for a fraction of what you paid for them because they are going to be scuffed up, paint chipping off, leaking, cracking, etc.
This is just my 2 cents.