That depends on your expectations. Expensive products tend to be manufactured with quality, body safe ingredients, they often have good warranties and sometimes are reparable, they usually last for years and years, and the vibrators tend to be quieter, more rumply (rather than bee-sounding) and more effective. As with all things, you get what you pay for.

Best thing to do is read read read Elnmoa is right though more cost has been = better quality.

Personally, I think the expensive vibes are worth it. But even so, you still need to be wise on your choice. I have bought an expensive vibe (SaSi) and yet it is not what I class as high quality! It's really only worth $90 and only cause it's rechargeable. The rest of the design is poor and cheaply made!

I'm with Bill & Jade - reading a number of reviews on something you like the specs and look of will give you a better idea.

Usually more expensive vibes are better quality but not always.