With Raichu's history in the Pokmon franchise, and its link to Pikachu, paired with the information of there only being 87 known PSA 10's in existence, there is no surprise for the amount this card is now valued at
Armored Shark Level 3 WATER Fish Effect Monster ATK/ 500 DEF/ 2000 (This card is always treated as an "Armored Xyz" card.) You can send 1 WATER Xyz Monster from your Extra Deck to the GY, then target 1 Fish monster in your GY with a Level equal to the sent monster's Rank
Not only is he a clown, which is inherently creepy in itself, but the fact that his body is perfectly in the shape of an egg (and the fact that his head and neck practically melt into it) makes this clown hit new levels of creepy that shouldnt be possible
There are a ton of Dragon Archetypes that have appeared throughout Yu-Gi-Oh!'s history, with some standing out as the best in the game
However, when grading foil cards, you might want to take into account, that foil cards are not only playing cards, but always collectors items as well