Hidden gems - primes from 24-35mm

Hello,

I love my prime lenses 50mm 1.8 and 85mm 1.8. I also like my 12-24 Tokina for wide angle work.

Sometimes though, not often, I wish I had something in the middle, somewhere between 28 and 35mm, ideally small and cheap second hand (region of £50/$80) as it wouldn't get that much use.

Manual focus is fine, as are thrid party lenses, doesn't have to be particularly fast either, but decent image quality is a must.

Are there any bargains to be had out there that offer this? e.g old E series, Ai, AiS etc, or any old third party lenses I've never heard of?