To Cube or not to Cube?

On a side note you really made me realize how illogical wg pricing is. 8 -> 10 is more than a 120m. I know 10 atts are the standard "mts for NX" item but still.

There will always be way more 8 atk WGs than 10 atk ones. They're just a lot easier to get.

Say you scroll a WG straight with 5 60%s:
10 atk: 7.8%
8 atk: 25.9%
6 atk: 34.6%
4 atk: 17.9%
2 atk: 12.8%
0 atk: 1.02%

You're 3 times more likely to end up with an 8 atk WG - so there are plenty more of them.

Of course, you can save some scrolls in the process of making them, by stopping scrolling if the first or second scroll fails - and if all you want is 10 atk, 70%s have a 17% chance of working out for you. But that still takes 25~ scrolls, more than the cost of the WG itself.