Very happy about what I got for what I paid!
Size M fits perfect for me as a 5'10" with a 32" waist.
Here I'd share some pros and cons for each items of this costume set based on my personal perspective:
----Pros:----
1) Shirt, which is very screen-accurate (in decent cotton fabric).
2) Waist sash and the headscarf are of nice quality stitches and material.
3) Mask is in rather pliable leather (not sure if it's real) that is easy and comfortable to put on, but somewhat difficult to adhere to the nose with some minor space left.
4) Belt applies similar leather material as the mask, and features the decent weighted metal buckle and tip with really nice detailed engraved patterns.
5) Gloves utilize the apparent shiny PU leather (as specified in their descriptions), which I didn't expect it to last for too long (PU leather tends to wear off/peel along with time). The fit and design are both great though!
----Cons:----
1) Pant, which is probably the only item that didn't meet my expectation. It's the same good fabric material as the shirt, but its cut appears to be quite loose and baggy, differing significant;y from the well-fitted appearance by the Dread Pirate Roberts in the original movie .