sport card binder book CTPOKO Trading Holder, 9-Pocket Sports Card Collector Binder Album for TCG, MTG, Yugioh, photo card, Football, Basketball, Hockey and Baseball Cards - 20 Pages, 360 Card Capacity locking poly rings make adding and removing sheets safe and efficient Fabmaker 360 Trading Card Holder:

Shield finale is a top pick for collectors and battlers eyeing 20

CLOSECLOSE BT16-040 R Digimon Lv [Counter] Blast Digivolve [On Play] [When Digivolving] [When Attacking] [Once Per Turn] By placing 1 [Royal Knight] trait card from your hand or trash as this Digimon's bottom digivolution card, delete 1 of your opponent's Digimon with as much or less DP as this Digimon

In that context, half a million for a Black Lotus looks like something of a bargain.

You will want to keep your cards waterproof and not use rubber bands (rubber bands can damage the cards)

To help me I like to use a life size photo of a real card

The expansion is the English version of Japan's "Abyss Eye" set (set code M5)