Copper Lockbox's estimated value?

Average price: 65.5kcr (including key)
Average estimated profit: 39.0640765kcr ~ 59.63981145%
Average estimated value: 104.5640765kcr
Content
Item
estimated chance to get from a lockbox looking at the prize pool of the prize boxes and their chances which are already known ~ average value of the item considering the standard color variations' chance to be 99%, divine/volcanic color variations to be 0.99% and the prismatic color variation to be 0.01%
Binoculars
18% ~ 11.5455kcr
Twilight Aura
0.5% ~ 4800kcr
Twinkle Aura
0.5% ~ 640kcr
Flower
18% ~ 85.616kcr
Prismatic Glow Eyes
4.5% ~ 525kcr
Headband
18% ~ 0.829925kcr
Long Feather
18% ~ 75.3295kcr
Plume
18% ~ 4.6275kcr
Wolver Tail
4.5% ~ 482.408kcr
All prices checked by the Lego Inc.'s price-check tool.
I spent a fair amount of time estimating and calculating the value of the Copper Lockbox, feedback needed. I'll keep updating the values as they change on the Lego Inc.'s price-check tool and I might do the same for other lockboxes in the future as well.

Would I be wrong in assuming that a good 90%-95% of that "average price" is almost entirely dedicated to the key itself?

@Sgt-Brownie
Yes, considering an average lockbox costs only 8kcr.

I've been pretty interested in lockboxes for a long time, and at the beginning of the year my goal was to open 100 lockboxes.
I proceeded to look at the wiki to see what could pop out of it.
Then I saw the copper lockbox, which seems to have a LOT of good items compared to the others.
Now, the problem is, copper lockboxes are rising in price.
I'm trying to buy 50 iron and 50 copper... So far I have 10 iron and 0 copper.
Copper boxes are currently going at around 15k, and also not much are going around
Might want to check the price of the box itself :/
Maybe someone would find this info useful.