We have a team working daily to review the value of each product and keep them up to date. However, some products will be constantly changing due to their volatility, which will affect the value of the product in your inventory and inside the boxes, hence the box value constantly changing.
The products you unbox at HypeDrop follow a "value obtained" rule, where if you exchanged or received the item for $10 you would not be able to sell it back for more than $10 but it will affect if the price goes down, this is done to avoid market manipulation and abuse. We don't recommend keeping items as assets, the best option is to exchange and take them out as soon as possible to avoid loss of value!
If you wish to hold items to play later, we would suggest holding vouchers instead as they have a fixed value.