As said on the tin...
if you are a new customer however you can use the 'WELCOME' code for £5 off 'over £10' however the website has a glitch making it actually only if the price is over £5.01 so this could cost you only 26p!
Link in first post
OR you can use the code AFFWELCOME3 and get it for £2.26
All three ways are incredibly cheap... you'd be a fool not to go for it!