Purchased R4 card from www.R4i.co.uk which is same company as memorybits. Positives: The product is great and appears genuine (but many suppliers offer this) It was competitively priced, and (amazingly reading some of the reviews here) arrived quite quickly. BUT: They did not honour the discount code publicised on the website, so I was charged the full price. OK this could be an oversight , but they have then simply ignored my every attempt to contact them to find out why. Having given up on emailing them I posted a review on their site. They put up loads of 5 star reviews, but funnily enough didn't post my 2 star rating! It is only a few £ so I'm not going to bother chasing it, but will NEVER use them again.