How do you calculate and compare their costs?
Pretty easy. If Hot Toys maks a 1/6 scale version of something and Sideshow makes a 1/4 statue of the same thing during the same time period. Or even more simply just comparing 1/6 scale figures from Hot Toys with similarly sized 1/4 scale Sideshow stuff from the same time period (ie comparing a 12" figure to an 18" statue).
For example some Iron Man comparisons:
Sideshow Iron Man Mark I
- 1/4 scale (about 18" tall)
- $399.99
Hot Toys Iron Man Mark I
- 1/6 scale (about 12" tall)
- $169.99
-- 42.5% difference
Sideshow Iron Man Mark VI
- 1/4 scale (about 17", but is in a semi-crouched pose)
- $499.99
Hot Toys Iron Man Mark VI
- 1/6 scale (about 12.5" tall)
- $209.99
-- 42% difference
Sideshow War Machine
- 1/4 scale (about 20" tall)
- $549.99
Hot Toys War Machine
- 1/6 scale (about 13" tall)
- $179.99
-- 32.7% difference
Now this is a bit less exact, but the size and complexity are close. Meaning that while the AMP Suit isn't 1/4 scale, it's actually smaller than a 1/4 Iron Monger would be (21" vs . 25") but has roughly the same amount of detail and general mass. It's also a fair bit older than Iron Monger so if anything a 1/4 scale Iron Monger would cost more, so I think it's a fair comparison.
Sideshow AMP Suit
- Nonscale (21")
- $1199.99
Hot Toys Iron Monger
- 1/6 scale (about 17" tall)
- $479.99
-- 40% difference