# How to Get Case Hardened Tier and Float Price History

> BUFF Case Hardened tier and float price history is available through
> `POST /v1/market/buff/history` from May 19, 2026. The endpoint records
> separate OHLC for the item, tier, and exact float-range market.

A Tier 1 low-float item has two nested price effects. The tier separates its
pattern class from the parent Case Hardened market, and the float bucket
separates its wear from the tier-wide market.

## The three BUFF buckets

For one Case Hardened item, the load-bearing comparison uses:

| Bucket | Market represented |
| --- | --- |
| Parent `base` | All BUFF listings for the ordinary Case Hardened item |
| Variant `base` | All BUFF listings in one tier, such as `variant:t1` |
| Variant `float` | One float range inside that tier, such as `variant:t1\|float:0.15:0.18` |

Each bucket has current `ask`, `avg_ask`, `bid`, `ask_volume`, and
`bid_volume`. Historical points have OHLC for the three price fields plus the
last-observed volumes, `bucket`, `open_time`, and `close_time`.

Range bounds include `min` and exclude `max`. A float of `0.18` cannot use the
`0.15:0.18` bucket. Float ranges also vary by item and tier, so the exterior
name alone is insufficient.

## Resolve and query the exact range

Use `GET /v1/market/buff/latest` to select the Case Hardened item, then locate
the tier under `variants` by stable `version` (`t1` through `t4`, or
`singleblue` when returned). Match the exact float to one of that tier's
`float` buckets and retain all three `bucket_id` values.

Request the base `market_hash_name` on the history endpoint and select those
same identifiers. Compare closing asks only at timestamps present in all three
series:

- Float bucket divided by tier base isolates the low-float premium within the
  tier.
- Float bucket divided by parent base gives the combined tier and float
  premium.

The [BUFF history reference](/docs/api-reference/market-buff-history) covers
the nested item, variant, bucket, and point objects.

## Applicable endpoints

| Endpoint | Returns | Plans |
| --- | --- | --- |
| `GET /v1/market/buff/latest` | Current bucket catalog and stable identifiers | All plans |
| `POST /v1/market/buff/history` | Tier and float-range OHLC from May 19, 2026 | Scale, Enterprise |

## Limits on the valuation

- All three asks are active listing floors. They do not show that a completed
  sale occurred at either premium.
- The tier still groups many paint seeds. Exact pattern placement, play-side
  blue, stickers, and one item's precise float can move its value within the
  same tier-and-range bucket.
- Missing timestamps should be omitted from the matched comparison. Filling a
  gap from another tier or float range changes the market identity.
- Dedicated BUFF range history begins May 19, 2026 and supports `30m`, `1h`,
  and `1d`; it does not provide earlier tier-and-float buckets.