Hi mate, I paid about £130 for my snorkel and it's a safari. It was from paddocks. They have gone up with the vat but they will still be cheapest. They are quite hard to fit, 2 people helps and you need to get a good seal with sealer. It definitely works because I've been over bonnet deep with it before. I think the 300tdi/td5 ones are more because the way that they attach to the air box if different.