Sometimes you see this where the exercise price is based in a different currency and trustnet hasn't kept up. or the exercise price is not as straightforward and harder to model. The answer is to check annual reports and see what the exact T & C's are.

They could be mispriced (drop me an email if they are !) but the spread could be quite large too. I can find out spreads via my broker but not sure wether there's a publicly availabe source.

I think Blue planet is listed in Jersey but has reports listed on the site of its investment managers (but I can't remember who)

Cheers,

BF