Another website worth trying is
http://www.violinvaluations.comThey are selling a set of Dominant strings for a little under £24 including P&P.
When I was at music college I always used Dominant, but after graduation I changed to Pirastro Oliv gut strings for about five years before switching to Pirastro Evah Pirazzi synthetic strings about a year ago, and haven't regretted it, (around £44 a set). Their response is fantastic and I no longer have the frustration of the strings going out of tune with humidity and temperature changes.
At the end of the day, it has to be remembered that the string that suits one person might not suit everyone else; it depends very much on the instrument and also as a player, what sort of sound you prefer.
For anyone with a general interest in Pirastro strings, they have an excellent website with downloadable pdf files giving descriptions of the tonal characteristics of all their strings.
http://www.pirastro.comAmanda