I know the feeling, I'm having the same issue trying to source some extra cameras for my security system. I'm getting hammered with multi option listings. I have an 8 port model, but only 4 cameras. It's actually going to be cheaper to buy a whole new kit than buy 4 cameras separately. I digress.
Once you've done your search, refine it on the left with a $ value. If everything under $250 is not what you want, put $250 in the amount box. Anything under that won't (or shouldn't) show up. When I was looking for my CCTV I had my range from $500 to $2,000. I wasn't planning on spending 2 grand, but I wanted to compare the really expensive ones to the not so expensive ones of the same brand. I also wanted to weed out the cheap Chinese rubbish.
When the time came to buy, eBay actually had a 20% across the site sale on, so I got a really good discount, which was enough to bump me up to the bit better model and not pay any extra.
