I used them last year and was really pleased, I managed to plant up 3 baskets in about 45 minutes, so it's not as quick as they do it, but then again it's much quicker than s tandard ones, and there's no damage to the root ball. The plastic has been UV stabilised, so hopefully should last a few years longer than normal plastic baskets. I think the weak point will be the lugs where the little gates clip in, if they break, the basket will be of limited use.
The good thing about them is you can use larger plants than you would be able to with a standard basket, so they look great straight away, and as long as you remember to feed and water regularly, they only get better.
I ordered another 4 a couple of weeks ago, same shopping channel, and as it was their 'birthday' they were doing free p&p, so was £12.99 for 4. If you want some more, then wait until this time next year and keep your eye out for the free p&p weekend, and stock up.