Most modern gadgets store data on tiny memory cards - and the best prices are all online. Here's a rundown of the cheapest deals, including an 8GB SD card for £6 and £10 for a 16GB Micro-SD card.
If you've spotted a better deal (incl postage) on any of those we've listed, please use the "suggest deals" link below to report them in the discussion.
Full DOs and DON'Ts
Whether it's a retailer or restaurateur, airline or air-conditioner seller, computer shop or car rental company, there are always two main risks. Either it's a dodgy company, or it's a legit company that has financial problems and goes bust.
The aim of these tips is to help you minimise the risks.
Quite simply, its customers are immediately transformed into creditors. This hits hardest if you've ordered goods or tickets from them, and not had delivery, as then you become one of a line of people trying to get your money back out of the company's assets, and you usually get back much less than you paid in.
Even if you've had delivery, if the company you bought from goes under and there's a problem with the goods, it can mean you've no comeback.
While MoneySavingExpert.com endeavours to check deals are valid, we don't check companies ' finances. Even huge names like MFI and Woolies have folded, so it's very important you use the right strategies to stay protected where possible.
Pay by credit card for something over £100, and Section 75 laws supercharge your consumer rights.
Unlike debit cards, cheques or cash, pay in full or part (even just £1) on a credit card and by law the lender's jointly liable with the retailer.
This means you have exactly the same rights with the card company as you do with the retailer. So if it goes bust, you can simply take your complaints there instead and get money back if there's no delivery.
Yet it's important you ALWAYS REPAY IN FULL each month, so there's no interest cost. See the full Section 75 guide.
Section 75 doesn't apply to purchases under £100, but there's still an option which can help. It isn't a legal protection, just Visa, Mastercard and Amex's rules, but it's a good back-up.
Spend on a Visa, Mastercard or Amex credit card or any debit or charge card. If the goods don't appear, you can try to ask your bank/card provider to reclaim the cash from the seller's bank, so long as you complain within 120 days of realising there’s a problem. See the Chargeback guide for full details.
Bogus websites are often set up to cash in on popular products like Ugg boots and Tiffany necklaces, so be wary if it's an unfamiliar site. And don't think that because it appears on a reputable search engine, that makes it a reputable site - always check.
Most folk know to look for a security padlock on the bottom right of a website, but that doesn't mean the site's legit, just that payment's secure.
To find out who registered the site and when, search the Whois database. Reputable firms should also appear on the Companies House site, the UK Government's official companies register. Be very wary of businesses with just a PO Box or email address.
Study the site's worldwide web ranking on Alexa. Anything in the top 100,000 means it's reasonably big and a good, though not foolproof indication of legitimacy. Do a quick Google search for other shoppers' experiences.
Crucially, ensure your security's up-to-date - free software can be downloaded to your computer in about five minutes. Full details in the Free Antivirus Software guide.
Many people are surprised to learn you've MORE rights buying online (or by telephone/catalogue) due to the Distance Selling Regulations.
These give you a legal right to send most goods back within seven days for a full refund (including outward delivery costs), even if there's no fault. You'll usually need to pay for the return delivery. Read Consumer Rights for a full guide.
However, of course, this is balanced by the fact ordering online automatically means there's a time gap between ordering and delivering - when the company has your money. So if it goes bust during that time, the distance selling rights don't help.
Ultimately, there is always a risk that a company can go bust. If the above routes don't apply, then you have to make a decision about whether you're willing to take the risk of parting with your cash.
Don't be scared of this. Every day we all make transactions based on trust, and this is part of that, but do balance up the amount you're spending against the risk. Don't give large amounts of money to a company you're not sure about.
If you've got a Sony camera, camcorder, MP3 player, PDA, mobile phone or a PSP, you often need a different format of memory card - a Memory Stick. These come in various sizes, much like SD, with adaptors to fit them in different-sized slots.
However new Sony product models now support SD/SDHC cards, which are usually cheaper, so go for a non-branded SD/SDHC card - though check it fits your gadget first.
The oldest type of flash memory covered here, CompactFlash, is still the format of choice for higher-end digital SLR cameras due to its longevity and durability. There are two types of CompactFlash - type 1 and 2 - and the only difference is their thickness.
Only the thinner type 1 cards are listed, as these are the standard nowadays.
As with the SD cards above, more demanding applications will require cards that can be read and written faster. Again, the SanDisk Extreme range has some of the best feedback possible, and is basically industry standard for pro photographers.
If you're planning to buy more than a couple of cards, you may get a better overall price buying from 7dayshop*, which offers discounts for bulk purchases.
If you're unsure of which type of flash memory your gadget takes, try Crucial's Flash Card Advisor. It's not comprehensive, but fairly detailed. Alternatively, just Google the name of the product; you should be able to find it on a product description somewhere.
Memory cards are categorised by the speed that they can take and upload pictures. This is called "class", eg class 2, class 4.
But unless you're David Bailey or Rankin, you probably don't need to worry about the class of your memory card - as the speed is only really a necessity for sports/action shots, or making movie clips.
It's really frustrating when you've built-up a stash of memory cards, then find your new camera/mobile uses a different type. In the case of Micro SD and Sony Pro Duo cards though, this needn't be an issue; you can buy card adaptors which are quite cheap and will bridge the gap between formats, making micro SD cards sit happily in Memory Stick devices.
Views today: 14
Total views: 534,430
Get all this & more in MoneySavingExpert's weekly email full of guides, vouchers and deals
GET THIS FREE WEEKLY EMAIL Full of deals, guides & it's spam free
Find the best online rate for holiday cash with MSE's TravelMoneyMax.
Find the best online rate for your holiday cash with MoneySavingExpert's TravelMoneyMax.