# Gacha Fees Methodology

## 1. Overview

Fees for Gacha are measured as the net economic value generated from pack sales. This metric is calculated by subtracting pack buybacks from total pack sales. Card packs are purchased by users through Gacha, and a buyback mechanism is supported where cards are sold back. Net flows are represented by the difference between pack sales and pack buybacks, reflecting the actual fees retained by the protocol.

## 2. Data sources

- **Blockchain events**: `Paid` and `SoldBack` events from `Gacha` contracts, Solana token transfers, and Solana account activity, covering Solana, Base, and Robinhood Chain
- **External data**: End-of-day price feeds for payment assets

## 3. Step-by-step calculation

### Component A: Gacha pack sales tracking

- **Purpose**: Gross revenue from pack purchases is captured.
- **Logic**: Pack purchases are identified across both EVM and Solana chains. On EVM chains, `Paid` events from `Gacha` contracts are parsed, and transactions are filtered to include only those where the payment asset is matched to the designated stablecoin and the payer is excluded if identified as a team wallet. On Solana, token transfers to designated Gacha recipient accounts are tracked, and transfers are filtered to include only USDC transactions where team wallets are excluded from the authority accounts.
- **Key fields**: `block_timestamp`, `amount`, `token_address`, `signer`

### Component B: Gacha pack buybacks tracking

- **Purpose**: Payouts from card buybacks are captured to be subtracted from gross fees.
- **Logic**: Pack buybacks are tracked across both EVM and Solana chains. On EVM chains, `SoldBack` events from `Gacha` contracts are parsed, and transactions are filtered to exclude those where the seller is identified as a team wallet. On Solana, outflows from Gacha USDC token accounts are tracked using account activity data, and any transfers from these accounts to team wallets are subtracted to isolate genuine user buybacks.
- **Key fields**: `block_timestamp`, `amount`, `token_address`, `signer`

### Component C: USD conversion and net fee aggregation

- **Purpose**: Net fee values are normalized to USD and aggregated.
- **Logic**: Net flows are calculated by subtracting pack buybacks from pack sales. Daily fee amounts are normalized by decimal precision and converted to USD using end-of-day price feeds for the respective payment assets. Values are aggregated to a daily granularity with UTC day boundaries, and forward-filled with zeros for days without activity.
- **Key fields**: `timestamp`, `fees`

*This methodology was automatically generated by Token Terminal's methodology analyzer.*

Total value users pay to use a protocol (gross fees, user-paid fees).

Fees

NFT marketplaces

Users pay USDC to open gacha packs, each of which reveals a tokenized graded trading card. Users can sell a card back to the platform for USDC or redeem the physical card from the vault. The platform also earns royalties from marketplace trades.

Collector Crypt tokenizes graded physical trading cards, such as Pokémon, as NFTs on Solana. Cards are authenticated and held in secure vaults. The platform consists of a gacha pack experience and a secondary marketplace, and has its own CARDS token.

Collector Crypt is a Solana-based collectibles platform led by CEO Tuomas Holmberg.

Gacha

Fees

Fees

Chain breakdown