## Code

```
import enum
import requests
import pandas as pd

CP_MAP = {
    "regular": {
        "alpha": {"legendary": 3000, "epic": 600, "rare": 120, "common": 30},
        "beta": {"legendary": 1500, "epic": 300, "rare": 60, "common": 15},
        "dice": {"legendary": 1000, "epic": 200, "rare": 40, "common": 10},
        "promo": {"legendary": 3000, "epic": 600, "rare": 120, "common": 30},
        "untamed": {"legendary": 1000, "epic": 200, "rare": 40, "common": 10},
        "chaos": {"legendary": 500, "epic": 100, "rare": 20, "common": 5}
    },
    "gold": {
        "alpha": {"legendary": 150000, "epic": 30000, "rare": 6000, "common": 1500},
        "beta": {"legendary": 75000, "epic": 15000, "rare": 3000, "common": 750},
        "dice": {"legendary": 50000, "epic": 10000, "rare": 2000, "common": 500},
        "promo": {"legendary": 150000, "epic": 30000, "rare": 6000, "common": 1500},
        "untamed": {"legendary": 50000, "epic": 10000, "rare": 2000, "common": 500},
        "chaos": {"legendary": 12500, "epic": 2500, "rare": 500, "common": 125}
    }
}

class Rarity(enum.IntEnum):
    Common = 1
    Rare = 2
    Epic = 3
    Legendary = 4

class Edition(enum.IntEnum):
    Alpha = 0
    Beta = 1
    Promo = 2
    Reward = 3
    Untamed = 4
    Dice = 5

    def to_slug(self, card_id):
        slug = self.name.lower()
        if slug == "reward":
            if card_id <= 223:
                return "beta"
            elif 224 <= card_id and card_id <= 298:
                return "dice"
            elif 299 <= card_id and card_id <= 330:
                return "gradius"
            elif 331 <= card_id and card_id <= 351:
                return "chaos"
        else:
            return slug

def get_data():
    market = requests.get(f"https://api2.splinterlands.com/market/for_rent_grouped").json()
    card_details = requests.get("https://api.splinterlands.io/cards/get_details").json()
    result = {}
    for card in market:
        gold_slug = "gold" if card["gold"] else "regular"
        edition_slug = Edition(card["edition"]).to_slug(card["card_detail_id"])
        rarity_id = [card_detail["rarity"] for card_detail in card_details if card_detail["id"] == card["card_detail_id"]][0]
        rarity_slug = Rarity(rarity_id).name.lower()
        card["cp"] = CP_MAP[gold_slug][edition_slug][rarity_slug]
        card["cp_per_dec"] = round(float(card["cp"]) / float(card["low_price"]), 3)
        if card["cp"] in result and float(card["low_price"]) < float(result[card["cp"]]["low_price"]):
            result[card["cp"]] = card
        else:
            result[card["cp"]] = card
    return result

data = get_data()
df = pd.DataFrame(data.values())
df = df.set_index("cp")
df = df.sort_index()
df[15:][["card_detail_id", "gold", "edition", "low_price", "cp_per_dec"]]
```

## Result
![Screenshot](https://i.gyazo.com/7c0a8366fdc3c3c71aef3ed8b34aff84.png)

You can run the code in Google Colab. 

https://colab.research.google.com/drive/16tsx765O_Zl9txHNlA8Qe1bY5QMnUIzg?usp=sharing