Looks like a good bargain to me
Its a cheap battery but a bargain, well as it doesn't state the weight then who knows.
I certainly wouldn't buy a battery without knowing the weight.
Well I can lift it & I'm no Dazmond 
So that'll do for me.
Be careful of cheap batteries the lead plates are thinner and don't last long , I have bought a few of these el cheapo battery and regret the buy when they let you down and cannot work.
I agree with both of your comments. There is no such thing as a combination battery. Its either a starter battery with thin plates or a leisure battery with thicker plates.
Those 800 CCA seems to indicate to me that its a starter battery being marketed as a leisure battery. Many use starter batteries for wfp. They may not last as long as a leisure battery but their lower price will probably make up for it.
I would 'worry' about the warranty tbh. You pay the return to manufacturer costs and you wait for a verdict. You also have to send the charger you use. Bets that the warranty is rejected and you don't get your charger back.
The warning - don't use where life is involved = they don't trust their own product after telling you how good it is.
The Warranty Does Not Cover
*Sulphation, *Wear & Tear, *Deep Cycling, * Overcharging, *physical Damage, * Incorrect Application.
As a layman, how can you prove you didn't use it in an incorrect application? They don't quantify what an incorrect application is? Numax and a few other say that wfp is an incorrect application so no warranty. But its not written down on a list of warranty conditions.
My battery is on a split charge relay. It charges at a higher voltage than my leisure battery charger. Does that mean that the van alternator is overcharging my battery?
If they tell me the plates are sulphated up so no warranty, how do I prove them wrong? The battery isn't in front of me to argue. They are in control. If they show me a photo of the plates, how do I know that they are from my battery? (I've worked in the motor trade so know the tricks.)
Cleancare, you got a big battery at a good price. If it packs up half way through the warranty, I wouldn't both try to action it. It will cost you too much and the risk of having your claim rejected is too high even if its a genuine claim. They also say that they can make a part claim, ie a partial claim. If they offer you £10 off another battery, what then?
I have always paid more and bought my batteries through the local motor factors. They can sort out any warranty issues.
Some buy their batteries from Halfords; if there is a claim then they sort it immediately. To me this has got to be worth the extra cost.
But that's my opinion.