Keep your money monkeyboy. I like the first two trades well enough. Definitely gonna warrant a read or two and I can definitely write something on them in the future.
While I wasn't really into the first one (the narration/thought boxes piss me off ALWAYS) and I wasn't too hot on the way it read for some reason, I enjoyed it for the most part. I loved that opening sequence to tell the tale of Hellboy. I was also kind of sad that Bruttenholm died so early on, but I guess he'll be around later. The final part of the story was good. I like the supplimental material and I'd like to read more short stories like the one with the big giant Anubis dog. I will say that the second volume pulled me in more. The story was fantastic despite the somewhat lack of vampire biting. I dug the Hecate stuff, as well as the Fates and the Baba Yaga stuff. I'm intrigued to see where these things go. I read them intently, but I think I read the second one faster because I wanted to see where it would go. I really enjoyed looking into the art in the panels of the first one. Mignola has some interesting stuff there.
I think my favourite part about Hellboy the character is the kind of reverse-Miltonic-Satan aspect to him. For a guy called "Hellboy" he really seems to take the self-agency as he should, much like Milton's Satan. Although I'm not too sure about the idea of his maiming himself in breaking off the horns (it's gotta be symbolic). I like all the different mythologies and shit all being worked in together as well. I'd almost say that after this first read, Mignola is trying to make a point, or at least this series has some sort of point to it that could make for a wonderful thesis statement sometime someplace.
I also think Abe Sapien is supercool and I want more of him! I'll definitely be picking up more trades at some point in my life. Good stuff!
EDIT: You fuckers didn't tell me that my favourite bearded sage wrote the intro for volume two. That might have helped