it should be higher than the same price tag.
? you think that if you sell a big amount you should receive more than market price?
yea man wholesale markups are the new rage. Buy more, pay more

/end sarcasm
Let's say I want to "sell" you 2 BTC of a coin with a good market. Do you hold the coins or do you just dump them on the market?
Would you be open to a deal where you hold the coins, and later I slowly buy them back at market price? Reason being that I would like to convert some altcoins to BTC for investments, and would eventually like to use the income to rebuy the coins off your hand, thus avoiding a market dump.