i'd second that, BV. i've never found crucial's prices extortinate, and the peace of mind that they guarantee the RAM will work is very very important. i've had one or two issues with RAM from other companies, so i'd say crucial every time.
I've used Crucial in the past. Both times I used them, the prices seemed fair and it was no extra cost for next day delivery.
I was looking recently for another gig for my mates Power Mac and they seem a bit steep at the moment. I'm not sure if it's just a temporary blip in the memory market but it was almost double what I paid a year ago.
I won't buy from Crucial because they have a policy where they look at your cookies to see what kind of a shopper you are, then charge you accordingly. Just out of principal I won't buy from them because of that - I always buy from orcalogic.co.uk
When I first heard of this, one afternoon I tried to replicate it by checking the price of a module using my email PC at work running Internet Explorer, then a couple of hours at home on the Mac using both Safari and Firefox... in all cases, the price was identical. The work Mac isn't web-enabled so I couldn't check that as well...
I thought the Crucial price-changing was only in the US? I dislike the way the same memory module can be two prices depending on whether you go via the price selector or just browse for it... but wouldn't rule out buying for them if the price was good.
So long as the RAM has a lifetime warranty and the store is reputable, I'll go for whichever has the cheapest price.