The answer to the question in my opinion would be no. I don't think that they offer competitive prices once you have added in a level of support worth having and got the machine delivered. There are better deals to be had.
My opinion of Tiny service is, poor. You'll be dialing a £1/min telephone number and once connceted, the staff will forward you from phone to phone within the office until you hang up. This is what I've experienced anyway. My friend who also bought a Tiny PC at the same time I did has also received poor service and both our computers stopped working shortly after 1 year. If you buy a Tiny, don't expect to depend on the Tech support, because you'll be better off buying spare parts from other computer retailers. And make sure if you do buy a PC you'll be able to source the spare parts which I had a lot of trouble with because the spare part I required was uncommon and was not available in most stores.
If you really must buy a Tiny PC, then go ahead. However, I'll warn you that my experiences were not thta good.