Power Partnership Tin [Mewtwo & Mew GX] is a sealed tin from the SM - Unified Minds set. A collector tin bundles a few booster packs with a promo card or figure in a reusable metal tin. Its current market value is $862.98, a premium sealed item.
As of the latest update, Power Partnership Tin [Mewtwo & Mew GX] carries a market value of about $862.98. Its price has held fairly steady recently. Sealed products trade at a premium to loose packs because an unopened, untouched box is worth more to collectors and long-term holders.
Whether to keep Power Partnership Tin [Mewtwo & Mew GX] sealed or crack it comes down to your goal:
You can grab Power Partnership Tin [Mewtwo & Mew GX] from live eBay listings above, or support a local card shop that stocks sealed Pokémon product. Shops are also a good place to verify a box is genuine and in-hand before you buy.