Five years late to the party, but… I would recommend Essex Gnomes, found here. I own around 30+ of these figures, comprising a Gnome Army for my 2nd Ed. BattleSystem games, as well as my AD&D RPG games. The photo's on Essex's catalog are very accurate -- what you see, is what you will get. They stand about 20mm tall, but I have not measured them in years, so I could be a bit off.
I was conducting an Internet search for 28mm Gnomes, to locate more figures to enlarge my Gnome army, and I came across this link in the search results. Sorry I missed this posting back in 2011. If you read this post, and you would like to see photo's of my painted Gnome Army, let me know, and I will post some photo's for you. plasticwars[a-t]gmail[d-o-t]com.
I also have their [no photo available/not-armored badgers pulling it] Chariot model painted, and based. It is a nice model. It had three standing figures, but only two will fit in the chariot -- not a problem as the 3rd Gnome is fine on its own base.
I live in the USA, so shipping will be by air mail, across the Pond. Even with this, the figures price out at less than $1.80 USD per figure, when buying a lot of 15 figures! And that includes the postage factored in. I don't think anyone can touch Essex on price; the quality is very good, though not highly detailed -- which I prefer! I am an army painter: basic block painting; The Dip; dull coat; base, and game on! YMMV. Cheers!