Just bought a couple more of these collars for my dog and thought I'd share the info as it is so much cheaper than other outlets.
Zooplus sell these for £6.99 quoting RRP £11.17. Postage is £2.99 or free for orders of £29+. Amazon are charging £13.11 each collar with free postage.
The larger size is £7.99 RRP £12.66.
With the postage chg of £2.99 and 0.98p discount (7% 3yr discount on all purchases I paid one off £9.99 for back in 2014) I paid a total of £15.98 for two which I think you'll agree isn't bad going when each collar is over £13 elsewhere.
These are very smart nylon collars that wear well and have a strong, attractive metal clasp. I wouldn't trust the plastic clasps so many collars have these days with a dog that sometimes pulls as strongly as mine. They can also be cleaned easily by hand or washing machine.
Have a look at the customer pics on the site to see how smart your dog can look in it.