# Buy/Sell/Trade Airsoft > bstairsoft.com is a free place to buy, sell, and trade airsoft gear in person with people at the fields you follow. The site does not ship items and does not take payment. Feeds show posts from the fields you follow ("my fields"). You can follow at most 50 fields. A guest who has not chosen any yet sees up to 40 fields that currently have the most live listings and bins. Home is listings, with a Bins toggle and an activity feed of what changed on those fields: new posts, price drops, sold, bids, bumps, bins opened, and photos added to a bin. There is no search across the whole site. A **listing** is one item. It is sell (WTS), trade (WTT), both sell and trade, or want to buy (WTB). Want to buy cannot be combined with sell or trade. A sell listing has a price and a condition, can be marked sold, and can be bumped back to the top of the feed. A trade listing has a condition and describes what you would take. A want-to-buy listing has a starting bid that other players bid up, and has no condition. A listing has a title, photos, and a description. A **bin** is one post for a pile of gear, up to 100 photos. Each photo can have its own caption and its own price. A bin has a title and an optional description. It has no condition, no single price for the pile, no sell/buy/trade type, no bidding, no sold status, no PriceWatch, and no bump. Buyers message the owner and can point at a photo. A bin is a pile in one post, not a listing with one price for everything in it. A **PriceWatch** is an alert on a sell listing. You set the price you would pay. If the seller drops to that price or below, you are notified. It does not apply to want-to-buy, trade, or bins. Saving a post is a separate bookmark, and it works on listings and bins. A PriceWatch is not the same as saving a post. An **exclusion** hides that person's listings and bins from your feeds. They can still message you, and they can still see your posts. A **block** stops messages in both directions and closes any conversation you already had. Their posts can still appear in your feeds. Using one does not turn on the other. An exclusion is not a block. A **field** is a place people play and meet. Posts are tied to the poster's fields, and that is where you meet. Players arrange payment themselves. The same site is on the App Store and Google Play. Listings, messages, and fields work the same as on the website, and the apps send push notifications. ## Pages - [Home](https://bstairsoft.com/): Listings for your fields, with a Bins toggle and an activity feed. - [My fields](https://bstairsoft.com/my-fields/): Choose the fields you follow. At most 50. - [Info](https://bstairsoft.com/info/): Directory of the written pages. - [Listing or bin?](https://bstairsoft.com/info/listing-or-bin/): When to post one item and when to post a pile. - [What's a PriceWatch?](https://bstairsoft.com/info/pricewatch/): Price alerts on sell listings. - [What's an exclusion?](https://bstairsoft.com/info/exclusion/): Hide someone's posts without blocking them. - [What does Block do?](https://bstairsoft.com/info/block/): Stop messages without hiding posts. - [Get the app](https://bstairsoft.com/info/apps/): App Store and Google Play links. - [About](https://bstairsoft.com/info/about-us/): What the site is, and that trading happens at a local field. - [Pricing](https://bstairsoft.com/info/pricing/): The site is free. No signup fee, listing fee, or messaging fee. - [End User License Agreement](https://bstairsoft.com/info/eula/): The terms players agree to. - [Privacy Policy](https://bstairsoft.com/info/privacy-policy/): What the site collects and how it is used. - [Contact](https://bstairsoft.com/contact-us/): Write to the site. ## Optional - [Create a listing](https://bstairsoft.com/listings/create/): Post one item. Requires an account. - [Create a bin](https://bstairsoft.com/bins/create/): Post a pile. Requires an account. - [My listings](https://bstairsoft.com/my-listings/): Listings you have posted. - [My bins](https://bstairsoft.com/my-bins/): Bins you have posted. - [Messages](https://bstairsoft.com/my-messages/): Conversations with other players. - [My saves](https://bstairsoft.com/my-saves/): Listings and bins you bookmarked. - [My PriceWatches](https://bstairsoft.com/my-pricewatches/): Sell listings you set a target price on. - [Account](https://bstairsoft.com/accounts/): Settings for a signed-in player. - [Sign up](https://bstairsoft.com/accounts/signup/): Create an account. - [Terms and privacy](https://bstairsoft.com/terms-and-privacy/): Short page that links the EULA and the privacy policy.