TL;DR: You can buy most of these items separately, but the kit @ ~$225 is cheaper, and the quality is overall Amazing. 10/10 would buy it again.
Pics: https://imgur.com/a/s7uGlgr
Background: I purchased the items through eBay. The seller was asking $255 + $13 shipping buy it now. I offered $205 and they accepted. The Ebay listing said the box was in perfect condition. It was not, so there are some pictures more focused on damage to the packaging than to the items itself. So if you feel some of the pictures are focusing on cardboard instead of the items, you're probably right.
I only got to spent about 30 minutes looking at the items last night, stupid real world getting in the way of my playing. So if you want more detailed/specific pictures or additional information, please ask. I'm happy to look closer at them as much as you need!
My first impressions are that, personally, the set is worth every penny I spent and I am very happy with my purchase. All items are metal (or appropriate material), and finish is very good. You'll see in the pics that there's tiny bits of sloppy painting on some of the items, but that's getting nit picky in my opinion.
Now on to the items themselves.
Dr. Strange Items: I'll admit I know little about Dr. Strange other than what you see in the movies. I also probably spent the least amount of time looking at these.
Eye of Agamotto - Metal, with cord wrapped in leather for the strap around the neck. The leather sections on the strap are about 4” and swap back and forth between black and red. It's very heavy. There is no "movement" so it does not open/close. It does not glow or power on or anything, it's 1 solid piece, but it's very well made. Clean finishing, etc.
Sling Ring - Metal, I unfortunately didn't have time last night to undo the rubber cords as part of the packaging to see if it actually fit on my fingers or not. But if you'd like more detailed information/pictures, let me know. It's not like a cheap adjustable ring, it's solid thick metal all the way around.
Spiderman:
Black Panther: Like Dr. Strange, I’m not super familiar with Black Panther
Claw Necklace – All metal, chromed(?), or at least shiny. Thicker metal . Attached to a cord by a metal clamp to keep each claw in place and the cord has a typical necklace clasp. It’s very nicely made
Kimoy Beads – The beads are pretty heavy so I believe they are metal, though I could be wrong. The painting of the runes on each bead is very tidy, way less sloppy than the cuffs. Each bead is unique and painted in a metallic paint to make them pop.
Iron Man
Since I say the Mark 50 Arc Reactor alone makes the kit worth the value, I did a little price comparison to see what it would cost to have each of these items made for me.
Sling Ring – $26.00 on Amazon There is a cheaper one, but it had 3* reviews, this one is 5*
Claw Necklace – $20 on Amazon Only real thing I checked was that the claws were metal, and this listing says they’re stainless steel, so???
Kimoyo Beads – $40 on Amazon – Look very similar, but the pictures on amazon makes the construction look less clean close up than what I got
Avengers: Infinity War – Iron Spider man – I spent about 10 minutes googling and couldn’t find anything even close to comparable.
Mark 50 Arc Reactor – I couldn’t find anything comparable. There’s a nice one on amazon for $150, but it comes with a stand and LEDs, so not a great comparison. There’s also this one that’s a touch different, but again, LEDs
So, the Eye of Agamotto, Sling Ring, Claw Necklace, and Kimoyo beads alone come to $166 if purchased separately. So $34 for the cuffs and Arc Reactor which are a bit harder to find but I doubt you could beat that price.
Let's talk about the box. It's a very nice display piece and made out of pretty solid cardboard. The outside of the box has the unique number, mine is #294/7000. Unfortunately the one I received was clearly not kept in great condition, has some tearing in points and such. But it's all minor, and I don't plan on getting rid of it, so it's not that important. Inset wise, sadly the felt covered cardboard is torn in a couple spots. So I'm thinking I'll rebuild the insets with foam, so the items can be pulled out easier later. And you get a nice little card saying it's an authentic collectors piece and again numbered 294/7000.
I think that about sums it all up. Again, if you want any more information, different angled pictures of the items, or whatever, please feel free to ask.