Let the hive mind of Engadget get that for you.
"I own an iPhone 3G and I'm looking for a decent speaker / alarm clock for it. I am going to listen music in a mid-sized room, so I want nice quality speakers with solid bass. I also want to use it as an alarm clock, so it would be great if there is such a feature. The price can be low-mid to mid-high range. I was looking at the Klipsch iGroove SXT; it's powerful, slick and the reviews are good, but it doesn't have an alarm clock feature. It's no deal breaker if I can set it up from the iPhone, but I'm not sure. Thanks!"
I'm not terribly sure, but I think no EU cellphone provider charges to receive messages. The reason being, you can't choose to accept or decline messages - they just come to you regardless. This is unlike calls, which you choose to accept.
Even when you're roaming abroad, no UK provider charges to receive text messages!