Posted: 04/10/2013 at 09:13
These companies make profit on them (partly through VAT avoidance by using Jersey) and you would not pay £6.00 in a GC or the like for bare root plants or 1'' seedlings. You can easily get similar plants for £1.
You do get convenience by them posting them to your door and if you look after the tiny plants and they survive, then you can fill your garden quickly.
Just remember, there is no such thing as a free lunch - you are paying £6.00 for plants and P&P and do not give into advertisements so easily.