Dmaxx.4.2.2 rooted and writable. Is sunshine only way to unlock bootldr?

I love this phone, nothing coming out is exciting. But, I need lollipop now. I'd like to install a recovery, make a backup, flash lollipop based Moto x Rom. If this phone was new, I would pay for sunshine without thinking, but I don't know if I want to invest money in a phone towards the end of its useful life.

So is there any other way to get lollipop?