I bought the D&D Sapphire Anniversary Dice Set soon after it went on order. Two months later you can still buy them so didn't sell out like hotcakes, but at $300 I wasn't sure it would.

The dice come in a white box with padded interior and holes to put each individual die. There is an attached die tray that you can use for rolling your dice (they're metal so don't necessarily want to roll them on a table and make indentations). There is also a poster of a Sapphire Dragon with D&D stats, a D&D sticker and a certificate of authenticity.

You get 1d4, 4d6, 1d8, 2d10 (10s and 1s), 1d12 and 2d20 (one with an embedded sapphire). It's a set designed for D&D 5th edition (hence the extra d20 for the advantage/disadvantage die). The dice are metal with rounded edges and blue numbers. One die has a synthetic sapphire and all the dice are weighted and tested for fitness (I think). Good rolling feel.

I took a look at other metallic dice sets and this one looks nice. Kind of plain but I like it over weird runes and embellishments.

Overall it's a nice dice set. Without the sapphire and collector's edition probably would sell for half the price so it's not that steep a price. I plan to use this as my regular dice set and hope not to lose any dice.