I'm noticing a recent trend on Ebay - the asking prices for many film cameras is going up! I'm not sure if this means much, because I've also noticed that cameras that are sold via on-line auction hit their sale prices quite low, which is the real indicator in my opinion. The problem is, not too many are being sold via auction - most sellers are using the "in your dreams" Buy-It-Now pricing. A better place to look by far is in local classified's like Ebay's little brother, Kijiji - guaranteed you will find a good film camera in your own neighbourhood at a very cheap price this way.
It may depend where you are in your photography journey. Film may be already very familiar to you, as it is to me, and perhaps you're looking for something better. Again, by shopping around, you will find the camera of your older dreams at rock bottom prices right now, but where Ebay is concerned, it might take you a bit of sifting to find it. As a general guideline, if you're new to film, go cheap first, just to make sure it'll suit you - that "digital crack" is a tough habit to kick. If you're already film familiar, then you should be looking at getting into film's high end - those cameras you drooled over in glossy pages 30 years ago are now available at much lower prices than a lot of digital cameras today.
Firs of all, I'll cover the cheap end for beginners. Aside from the perfectly good film SLR you may already have- start using it again. But if you don't have a film camera, I can't think of a better one to recommend than the Olympus Trip-35. I have one of these - it is hands down the best camera I've ever owned, aside from the fact that it is now hopelessly broken. I paid $4.00 for mine in a yard sale, and it worked great for 2 years. Here's Ken Rockwell's take on it, in case you're still not convinced. The word must be out now though - typical Ebay asking prices for these is now around $100, and they're selling for close to that. However, I want to replace mine, and, although there are lot's of similar cameras at that price point, this little box of magic is still near the top of my list. Keep your eyes open at yard sales, flea markets and Thrift Stores too, and don't overlook the East German Hanimex SE and Russian FED 50, which were good copies of this design, but more affordable. I'm recommending these almost toy-like cameras for a reason - that is, I've found they take far better pictures than any film SLR I've ever owned. That's right. Much better than my Pentax Spotmatic, Canon TX, Canon T50, Pentax MV, Practika MTL, or Zenit 11 (Geez - I'm starting to sound like Mr. Rockwell already!) Well, I wouldn't say it if I didn't think it were true. There is a secret sauce in the Olympus Trip 35 that takes advantage of a fundamental SLR design flaw that simple viewfinder style cameras can manage to avoid.
Now, let's talk about the high end, for those with a little more (but not much more) money to spend, and who want to extend their creativity with film. If you are still comfortable with 35mm SLR's after what I just said above, then this is where you'll find the real high end bargains. If you're already well invested in a Nikon, Canon, Pentax or Sony (Minolta) DSLR system, then you have full lens compatibility with the late 1980's through 90's equivalent film SLR's, and you would do well to consider something like the Nikon F100, or Canon EOS 1n. There is no better way than this than to go Full Frame 35mm SLR on a budget, and you can buy a lot of film for the thousands of dollars you'll save on the camera.
Personally, I want to avoid the SLR design flaw with my film photography, because with film, results count with every shot, and film SLR's have brought me nothing but disappointment (truly and honestly) So, aside from the near certainty that I'm going to get another Trip-35, for 35 mm film shooting, I am highly inclined to Rangefinder cameras, and for the high end, there is only one name - Leica. And here is the cheapest Leica on Ebay right now, although it sounds like it might need a bit of work. But you don't need to buy a Leica to get a Leica.