Essentially, eBay Bucks are a form of cash back that eBay gives you for the eligible purchases you make on eBay. If you enroll for eBay Bucks, you'll always get 2% on eligible purchases.
- Occasionally, eBay has short periods where they offer bonus eBay Bucks - typically it's anywhere from 2X-5X, which would mean 4%-10%. I believe there's rarely even 6X. Not everyone receives these promotions - it's essentially random.
- Most purchases on eBay qualify for eBay bucks; the most relevant exception is eBay gift cards. However, there are other ineligible items aside from eBay gift card purchases. Before you make a large purchase it may be worth looking at the terms to ensure eligibility.
- You cannot earn more than $100 in eBay Bucks in a single transaction, and you cannot earn more than $500 in eBay Bucks in a quarter.
- You will receive eBay Bucks for an entire quarter shortly after the quarter ends. You are paid in the form of an eBay Bucks certificate, which you can use for purchases on eBay (including Target and eBay gift cards). You will only receive an eBay Bucks certificate if you earn more than $5 in a quarter.
Here's information from a previous post I made about eBay Bucks - it should get you started on the enrollment process:
Unfortunately, there is no guaranteed formula to get eBay Bucks Offers. If you want to get them and aren't currently, go to My eBay > Account > Communication Preferences > Promotions and Surveys. I have the first four boxes checked there to be safe, but I think the only one that matters is "General email promotions." If you already have that checked and you're not getting eBay Bucks offers, uncheck it, save that, and check it + save again. I had to do that a handful of times over the course of several weeks until I finally got them.
You also need to make sure you are enrolled for eBay Bucks, which you do here:
eBay Bucks Rewards Enrollment.
You won't know if it "worked" until you actually get an eBay Bucks offer email, so it's really a guessing game.