.NET Reflector not free anymore

For those of you who use RedGate's .NET Reflector I have a sad news. I just received an email stating that they are changing their policy and .NET reflector won't be a free tool anymore :(
Starting from version 7 it will cost you 35$ for a perpetual license. Apparently they can afford working on this for free. You can read more on this decision here.

What is .NET Reflector?
For those of you who doesn't know the tool - it's a very good class browser, analyzer and decompiler for .NET. I use it quite often to decompile dlls if I need to check what's actually in there.

Can you recommend a similar free tool?