Insurance cover

I am wanting to know how much you think is a reasonable amount to pay for travel insurance, what experiences have others had. I recently got a few quotes, the cheapest beign £1207-80p!!!!!!!!! Ridiculous :-(  my fligh is only £110 lol, why do we cancer patients have to be penalised for something which is beyond our control? i would like to know how others feel about this and if any of you know of any GOOD insurance companys out there that won't hold our illness against us.