When you buy cubes, you probably don't want to use Amazon. Amazon is good for buying cubes in packs, but seedcubeshop.com is better for individual cubes. It is where most cubers get there cubes, and the prices are usually lower. The shipping isn't free unless you get a lot of stuff, but it is usually like 2 dollars and fast shipping. To go to speedcubeshop.com press here.
When your cube is magnetic, it moves a lot faster and smoother. If you are into cubing, then you should definitly get magnitc cubes. If you aren't, don't want to spend the money, or are just getting a cheap cube to see if you like the type, that is fine.
If you are looking for a cheap and good magnetic 4 by 4, the little magic 4 by 4 is the way to go. It is, last I checked, $14.99 on Amazon (HERE) and on speedcubeshop.com it is $12.95 (HERE). If you are looking for a more expensive better 4 by 4, you would want to choose between 2 cubes. Look at this video: HERE.
This is the YJ yufu magnetic 7 by 7. It was $20.99 when we bought it and is a great deal. All big cubes have one problem, you CAN'T corner cut. The centers of the cube will break. On the 7 by 7 page it explains more and shows you how to fix it. Other than that (which all 7 by 7's do) this is a great cube. It moves smoothly, is fast and I truly recommend getting this cube. Press the underlined "Here" for a link to Amazon for this deal (they also have this deal on Speedcube shop, but we bought on Amazon) Here
This is the Supernova Volt Square-1 V2 (Fully Magnetic). It is a fast magnetic cube for 24.95 on amazon. It is extremely good and fast but if you are not that much into cubing then you might not want to get it. press HERE for that cube. If you want a cheaper Square 1 then you should get THIS which is also pretty good.
This is a good magnetic clock cube. It is $9.95 on speedcubeshop.com. If you want to get a clock cube then I would definitely get this cube because it is fast and magnetic. If you want to have a link to it, go HERE.
This is a good pack deal that I have. It is on Amazon and includes the 3 by 3, axis, windmill, fisher, skewb, and ivy cubes. It has prime shipping, and all the cubes are speed cubes. It was $15 when I got it. click here for a link to it
There are many deals for the mastermorphix. On Amazon there is a 3 by 3 mastermorphix for $7.99. Click HERE . In speedcubeshop.com there is a 3 by 3 mastermorphix for $4.95. Click HERE . (I got the Amazon one but I don't know if that is good.)
The next couple deals are ones that I didn't get. I think that they will be good for there price, but they may not. I also haven't gotten (in the above section) the 6 by 6, magnetic 2 by 2, magnetic 4 by 4, or magnetic 3 by 3 the magnetic square 1, or the clock cube. (I have other magnetic cubes)
Here is another good deal that you can get on amazon, it is 25.97 dollars. It has a 2x2, 3x3, 4x4, Square 1, Pyraminx, Megaminx, Windmill, and axes cube. As you might realize most of these cubes are a bit harder. It is not my choice what you get but notice that these might be a bit challenging. Press on the "Click here" for the link to this deal. Click here
Lube is something that you can put in your cubes to make them move faster. There are 4 different types of cosmic lube (the better type). The Lube that makes the cube the fastest is Lunar Lube. Also, there is Martian lube which is the second fastest, then Galaxy lube, the third fastest. Finally, Nebula lube the least fast. You don't always want the fastest lube because if your cube is fast to start with it can get too fast and out of control. As you can see, it is your decision on how fast you want your cube to go. To go to a good deal on all of these lubes click on "Click here for lubes". Click here for lubes
This is a good deal on a skewb, it is on Speed cube shop and has great reviews and only costs 9.95 dollars. You want a magnetic skewb because it moves better and faster. I recommend this cube to you, and if you are interested in this cube press "Press Here" to see this deal. Press Here