Your valuation of scarlett cr is in a whole other league compared to the cards you are looking for.
Consider the fact that the cards you are looking are obviously easier to be exchanged than the one's you are willing to trade, so either you will need to add a sum to your valuation of the cards you are looking for, either you are going to reduce the price of the cards you are giving in exchange.
Leave them be and you are not going to find anyone . I hope you do not suppose an OPA in the market current price, add's value in our eyes right? If the characters you are willing to give, raise in price there will be more players willing to sell them up so in the end the price is going down to the level it's supposed to be
Just a heads up