Question, why is it that you sellers (and I say that as in a general term and not at you alone Cherry), but "you sellers" who buy in from overseas at XXX price, already have a price set for selling them locally (with your added markup), and then when you have stock in hand, the prices go up because the market is now commanding the new premiums, NOT because they were purchased at a higher price to begin with.
You're clearly upping your price to make more money, rather than the price you were already happy with.
Reminds me of an episode on Hardcore Pawn, where guy took a baseball card in to pawn, was happy with $2k and the dealer was too, but needed it authenticated. Once authenticated, the authenticator said it could go for as low as $5k and as high as $10k. The owner of the card chose to keep it when knowing that, rather than committing to the "happy with" price of $2k.
This is of course different when you buy new stock, but we're talking about products that were bought for an already agreed value, before the market drove the prices up.