Valve adjustment - best/cheapest tools for the job (240D)

[dieselshake]

First off, this is my first post on peachparts and I've been perusing off and on since I bought my '82 240D in June. I must say, this is a great forum--thank you for being here!

I want to adjust the valves on the 240, but have heard mixed opinions about what tools to use. My big thing is price--some of the old posts on here speak about the Hazet wrenches costing about $55, now they're up to $130 on ebay, which I'd rather not have to save for to afford. I'm a complete rookie on anything mechanical, but I'm here to learn.

So, is there a cheaper source to purchasing these wrenches, or a better wrench out there for the job, or do I have to bite the bullet for a headache-free experience? Any feedback is much appreciated.