# FAQ

#### What sources of data are used to create an aggregate average daily price for watches? 

RWA Data Feeds by RWA World uses transactional historical price sets from over a dozen of on-chain tokenized watches such as Kettle.fi, Openchrono as well as off-chain like Chrono24, Watchype, Watchbase.

#### How do the recorded prices get protected from the price manipulation? 

Incoming price data is checked against the curve of the prices recently recorded in the database (7 days to 30 days timeframe). 

Here are the recent examples from the logs detecting the price outliers in the luxury watches category:

2024-10-17 00:09:05.760 | WARNING  | Filtered out 2 outlier listings for item 231

2024-10-11 00:12:02.921 | WARNING  | USD price for the item 989 changed from 10611.5000 to 15557.2000 by 46.6070%. Setting back to the current price. 

The first check for the item nr 231 was for the Omega Speedmaster Moonwatch.

The 2nd check was for the Hublot Big Bang Aero Black Magic 311.

#### For what categories does RWA Data Feeds provide price feeds?

Please see the list of the categories [here](https://orwacle.gitbook.io/orwacle/rwa-price-feed-categories).