There are a number of resources out there that allow you to plug in your decklist and get a breakdown of what percentage of your cards need specific colors of mana, what the average converted mana cost of your cards is, and other helpful information (Im partial to Tapped Out personally)
Here are some ways: Decrease in Value for Rotated Cards: Generally, cards that rotate out of the Standard format experience a decrease in value, especially if their primary demand came from their competitive viability
This means that after you've played down a horde of mana rocks at instant speed, you can then follow them up with an instant-speed Drafna, Founder of Lat-NamDrafna, Founder of Lat-Nam to instantly return The One RingThe One Ring and then cast it again
When the set was first released this card was hitting highs of $300+ but now the market has time to calm down the card now goes for a respectable $200.00
This should easily do the job for your MTG collection, but more expensive binders can offer better protection
1 Lightning, SecuritySergeant