If you start mining now, then 1600 euro for a 1 TH/s miner is a good price. If you have to wait, then it may not be a good price.
In general, mining is not suitable for a newbie unless you are doing it for fun or learning. It might be cheaper to buy bitcoins rather than to mine them, if that is your goal.
While it may seem like a good deal currently you have to take into account the continual difficulty increases. It may be difficult for the miner to pay itself off in the long term.
Bitcoinwisdom.com
https://bitcoinwisdom.com/bitcoin/difficulty has a diffulty chart. Take a look at the past few increases, it keeps increasing at a steady rate.
You can use a mining calculator like this one from bitcoinwisdom
https://bitcoinwisdom.com/bitcoin/calculator to estimate how much you will generate with your miner. The thing to keep in mind is that it is just an estimate, things can change for the better or for worst quickly at times.
You are probably better off buying bitcoin directly at this point.