I think buying on Amazon or eBay are very similar, as they both offer buyer protection in different ways. Amazon has an A-Z Guarantee and eBay has a resolution centre with the PayPal dispute process to back it up.
If you buy anything online you should use a credit card rather than a debit card as credit cards give you automatic protection for your purchase against fraud (which includes protection in case your item arrives damaged and the seller refuses to do anything about it).
The thing to avoid is buying from sellers who don't list proper contact details, such as the business name, address and phone number. With anonymous sellers you just don't know what you're buying or where the product has come from.
Also what is equally important is what mattress you buy. You can buy a hypnia memory foam mattress for £200 or a Tempur mattress for over £2000, so read all the feedback you can before making a decision.
Also remember that any purchases made online can be cancelled for a full refund within 7 working days (starting the day after delivery). The only thing to consider is that you may have to pay the return cost, which for a full size mattress could be £50 - £150 depending how far it has to go.
You can purchase a Silentnight memory foam mattress from your local mattress store or furniture store that sells mattresses. It can also be purchased from an online retailer like Amazon or eBay.
If you are talking about an air mattress, there should be a pump device included in it. It should come with a manual. If you don't have a pump device, try purchasing from eBay or amazon for generic air pump devices.
Memory foam mattress pads can be found at any store that sells mattresses like Leons or The Brick. As well Ebay also has a selection of mattress pad toppers that can be purchased at reasonable prices.
Mattress for a cradle can be purchased from Mattress Next Day UK, Cradle and Nursery Good UK and Mattress Man UK websites. Mattresses for a cradle can also be purchased from eBay and Amazon websites.
One can get a feather mattress topper from Walmart where many are available for prices between $40 and $200. One can also buy them from Amazon and eBay.
A 3 inch memory foam mattress topper can be purchased from stores like Sears, Walmart, Target, and Bed, Bath, and Beyond. They can also be found on eBay.
One can purchase a Game Cube memory card from eBay where there are many such items listed for sale. One can also buy them from Amazon or Amazon Marketplace.
A memory foam mattress in any size can be purchased at any mattress store such as American Mattress. Temporpedic also offers this type of mattress although they are quite costly. Another option is to purchase a memory foam mattress topper.
An organic baby mattress can be purchased online via such retailers as Amazon and eBay. It is also possible to purchase it in specialist stores, such as MotherCare and NaturePedic.
A twin air mattress can be purchased online from popular websites such as eBay and Amazon. It can also be purchased online from Argos in the UK or Target.
According to the website, Target sells mistresses for a Moses Basket. There are also listings on eBay for new and used. You should check out the Amazon website as well.
The places to purchase a green mattress are many and varied. The best place to start would be Amazon. If you are on a tight budget, a good option to try would be eBay.