How much did it cost you to get the Mordekaiser revenant skin?

That sums it up. I’d like to treat myself to a new skin. I have been playing Kaiser a lot (always liked him when lol first came out) I’ve switched to AAA Aram for fun and he’s a monster that I play a lot. I love the look of his new skin, but it seems like it would cost an insane amount to get? So just looking for your experience with this. I might just go with project seems like the stellar bond plus $10 gives you a decent amount. I wish the old god looked just a little more Polished