I suppose you also need to be honest about your DIY experience level. Is there a particular reason to make, not buy?, as you could easily end up spending more time/money than you think, and still end up with something your less than happy with.
I'm not advocating Buying Hutches as such, as a lot of them are too small, or poorly made.
Both Lancelots Hutches cost over £150, and the PAHome dual level one was pants as far as quality goes.
I know there are some really good ones out there to buy, and I wonder how many people buy v build, and what they got for the money.