Hey stubbie - don't give up on it yet! I struggled with the film speed selector on mine for a while as well. You don't describe in much detail how you've tried to change the setting, so you may not have tried this: I found that the only reliable way of changing the setting was to depress the selector with a fingernail (there is a notch on the selector to help with this). Once the the selector is depressed, which is tricky because its so small, the setting can be changed easily.
The vf and patch can be easily fogged by fingerprints or other markings on the exterior of the vf lens as well as the eyepiece. I've used a q-tip with just a little water (don't want any leaking into the body) to clean this, and have noticed marked improvements in vf brightness and patch clarity.
It is possible to clean the vf and rf. I just had mine CLA'd by Mark Hama here in Georgia. He has a fantastic reputation, and is a very nice person to do business with. After the CLA, my rf/vf/patch was much brighter and easier to focus than before. Even with the cost of a CLA and your eBay price, you'll have a very nice 35mm camera with a great lens for less than the cost of most decent low-end digital Point & Shoots.
Good luck!