I use nashbar's magnetic trainer with adjustable resistance.
I think it was $59 on sale. Works for me.

The Magnadyne was my all-time favorite, but boy, it rusted out fast.

I sold my rollers. I must have underpriced them, they were gone in hours on CL.

I'd like to get a good used spinner cycle, but so far, $300's about the norm.

For that, I can buy a bike.