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Use when assessing how easily a card can be sold. Spread (bid-ask) and velocity define liquidity.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/x3allamerican/cards-skills --skill liquidity-and-spread-analysis命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
基于 SOC 职业分类
正在显示 SKILL.md
| name | liquidity-and-spread-analysis |
| description | Use when assessing how easily a card can be sold. Spread (bid-ask) and velocity define liquidity. |
Spread = (ask - bid) / mid. Velocity = sales/month. Tight spread + high velocity = liquid. Wide spread + low velocity = illiquid niche.
| Spread + Velocity | Tier | Strategy |
|---|---|---|
| Spread <5%, Velocity >10/mo | Tier 1 (Liquid) | BIN price or BIN+OBO |
| Spread 5-15%, Velocity 3-10/mo | Tier 2 (Moderate) | Auction or BIN with patience |
| Spread 15-30%, Velocity <3/mo | Tier 3 (Illiquid) | Auction only, longer hold |
| Spread >30%, no recent sales | Tier 4 (Niche) | Specialist auction, hold longer |
Spread = (highest BIN listing - lowest recent sale) / mid-price
Example: PSA 10 Acuña RC: lowest sold $400, highest BIN $440, mid $420. Spread = (440-400)/420 = 9.5%. Moderate liquidity.
Sniper tool computes liquidity score for every comp.