By keeping your cards protected and in excellent condition, you maintain their value and ensure they can continue to be enjoyed or traded in the future
The Quarter Century card goes for around $70 while the Ultra Rare sits at $7
For example, if you live in a high flood/hurricane area, you might have to pay more to get your cards covered in the event of storm damage

PSA Set Registry: Collecting the 2002 Pokmon Legendary Collection Set PSA Set Registry: Collecting the 2002 Pokmon Expedition Set - An "e-Xciting" and Overlooked Card Issue PSA Set Registry: Collecting the 2002 Pokmon Neo Destiny 1st Edition Set PSA Set Registry: Collecting the 2001 Pokmon Neo Revelation 1st Edition Set PSA Set Registry: Collecting the 2001 Pokmon Neo Discovery 1st Edition Set PSA Set Registry: Collecting the 2000 Pokmon Neo Genesis 1st Edition Set PSA Set Registry: Collecting the 2000 Pokmon Gym Challenge 1st Edition Card Set PSA Set Registry: Collecting the 2000 Pokmon Gym Heroes 1st Edition Card Set PSA Set Registry: Collecting the 1999 Pokmon Jungle 1st Edition Card Set PSA Set Registry: Collecting the 1999 Pokmon Fossil 1st Edition Card Set An Eye on the Prize: Collecting Pokemon Trophy Cards Collector Profile: Scott Pratte, Profiling a Premier Pokemon Trading Card Prognosticator PSA Set Registry: Collecting the 2000 Pokemon Team Rocket 1st Edition Card Set PSA Set Registry: Collecting the 1999 Pokmon 1st Edition Gaming Card Base Set, the Series that Started It All Collector Profile: Zack Browning A Pokmon Collector Who Has Grown with the Hobby

You probably want to add a heap of effects that look for your creatures entering, a helping of effects that can double up your triggers, and to top it all off you can add a dash of the dash mechanic
While it might look strange to play the mana rock in a deck that doesn't really care about turning day into night or night into day, the ability to loot and gain life is a pretty meaningful upside, especially considering that one of our Stuffy Doll combos cares about us having a higher life total than our opponent does