I received gems but no bonus pony, have checked in everyday on that calendar event and sent in 2 reports about it.
Also, not sure if anyone else is experiencing this bug, but when I goto play the mini games like  ball bounce, the game is taking my bits instead of playing the ad video! Twice this has happened so far, I have sent in reports about this issue as well. No bits have been returned yet. Bits are so hard to accumulate for me in this game, i dont use real cash. Who really would pay 55,000 bits to play a 60second game? I always wait for the ad video to watch so I can play.   

ETA: 12-14-18 As of this morning I have received the bonus pony.

I had just received my BIN order from this seller and everything was just as described, shipped out fast, packaged very well with plenty of popcorns, everything sealed in a brand new priority box. I had not seen a "free shipping" on my BIN, the rate was on the listing, so no hidden agenda there. So this seller gets a positive from me.

Sorry some has had some troubles. The problems could be with how ebay has their site and the way you set up your sale pages. I keep running into sellers that say they combine shipping but when I get to "your cart" with multiple items from their store and hit the "request total" button on the upper right, I get an error from ebay saying the seller does not combine shipping charges. This is an issue some sellers know about but don't know how to get to that particular setting or it's on ebay's end. Sometimes it's not the sellers fault, other times it is.