Steem Monsters have really nailed it with this update, now for any card in your collection you can see it's market value - making it easy to list a card for sale at a price it should sell for. In addition the whole card combination works better - you can select multiple units at one - and the whole layout of the page is better.
With this @steemmonsters update you can really see the earnings you are getting from playing and collecting reward cards -as you build up cards the value grows - and now your redundant cards can be put up for sale at a reasonable price so they do actually sell.