I made a post a few weeks back on this exact card along with the Eevee and Porygon.
With lots of detailed photos, here’s the link
www.elitefourum.com/t/kangaskhan-trophy-promo-card-will-this-grade-a-psa-10/16257/1
I paid £2300 for all 3 cards, roughly £1900 for kangaskhan.
I spent a crazy amount of money over the past 30 days on cards, I was lucky with 3 seperate individuals, whom which I bought a lot from. The kangaskhan purchase specifically was part of a much larger lot, and don’t regret any of it for a moment 
I don’t think I will ever part with the kangaskhan, however much its value exceeded to. 
For reference a severely damaged one sold last week for £1500