I have decided to purchase raised beds to start my gardening year.
I'm a novice but have heard and read good things about raised beds.
I was going to buy the kits from Dobies which are 1mx1m and 10in in height, but a brochure in a recent 'Grow Your Own' from Harrod has kits which are 1mx1m and 6in in height for nearly half the price.

Can anyone tell me whether that extra 4 inches matters, and no smutty answers please?