Depends on the kind of player and the team. I'd say salaries begin at around 35k for back-up goalies or 4th liners, while top players earn something in the 100k-115k range at teams like Krefeld and Iserlohn. Straubing, Duisburg and Augsbrug might spend a little less, while the rest of the league spends more.
I'm told by a reliable source who I asked this exact question last year by email that salaries range in the DEL from $20,000 Euros on the lower budget teams to a maximum of about $150,000 for top ex-NHL players.
That's why I wrote the budget is from 2.5 - 6 million Euro, as those are the lowest and highest known numbers when it comes to player budgets.
The overall budget can be quite a lot higher. Hamburg, for example, has the second highest budget overall, as arena rent alone cost 1.5 million Euro, but when it comes to player budget the Freezers are quite a bit lower.