1. This cube may or may not be amazing...
2. If you spent over 6 hours "modding" it, you'd be charging around $10-15/hr for labor (yes, I deducted material fees).
3. From this, you have to ask yourself about explicit costs and implicit costs. Now, given the maturity of your posts, I think I can make the assertion that you don't actually work full time, and if you do, you're not nearly old enough to live on your own.
4. Thus...$10/hr is reasonable, but anything higher seems overpriced. No one here is going to buy a $100 cube unless it is legitimately great. Make a video, post it, share it, then we'll talk.
5. Also, if it's truly worth that much to YOU, then you might as well keep it for yourself