In reply to Sam Maher: I must admit that I thought you were being trolled when I read some of the later responses posted here.
It must be really difficult to make a reasoned and informed judgement when you read the range of opinion presented. The hazards of weather, crevasses, avalanche, route choice and altitude are dynamic factors which do combine to challenge and kill the most able mountaineers.
Yes, mountaineers can be lucky and survive despite their choices. They can attribute it to reading books, following blogs, or just staying in the footsteps of other guided parties; nonetheless, they are alive and others - less fortunate, but more skilled - die on the same mountain. This much is true.
Your options are not limited to hiring a guide. Let's look at them:-
1. DIY - following well-intentioned advice (like this, perhaps?) and practised techniques from books, DVDs and the internet, perhaps you might attend a BMC Alpine lecture; add luck...
2. A mountaineering club - there are numerous clubs in the UK, often with experienced alpine climbers and a European meet, prepared to support climbers such as yourself.
3. Conville Alpine Course - the inexpensive way to learn from a guide in the Chamonix area. If you are insistent on climbing without a guide or an experienced mentor, then this course is my recommendation.
4. Find an experienced partner/mentor on the climbing forums and climb as a rope of three.
Worth the money? Well, that's back to you again - what price are you prepared to pay to climb Mt Blanc?