# Buy Safely Notes > Copycat pages and resellers are common for popular supplements. A short guide to confirming the seller and protecting your payment details. ## Guides - [How Copycat Supplement Sellers Operate](https://where-to-buy-chewable-safely.loresiwa.workers.dev/copycat-supplement-sellers/): Copycat supplement sellers borrow a known product name, imagery and wording to look like the real seller. - [Marketplace Sellers and Supplements: Questions to Ask](https://where-to-buy-chewable-safely.loresiwa.workers.dev/online-marketplace-supplement-sellers/): Before buying a supplement from a third party on a marketplace, find out who actually ships it, whether they can show the label details, and how returns and. - [Checking a Bottle for Lot Number and Expiry Date](https://where-to-buy-chewable-safely.loresiwa.workers.dev/lot-number-and-expiry-date/): The lot number and expiry date are printed on the bottle or its packaging so a batch can be identified and its date checked. - [Using Card Protections When Buying Online](https://where-to-buy-chewable-safely.loresiwa.workers.dev/card-protections-online-purchase/): Card protections online purchase rules differ by issuer and country, so they are a back-up plan and not a reason to skip checking the seller first. - [Spotting Subscription Terms Before You Check Out](https://where-to-buy-chewable-safely.loresiwa.workers.dev/subscription-terms-supplements/): Subscription terms supplements sellers use are often placed below the order button or inside a linked page, so read them before you enter card details. ## About - [About Buy Safely Notes](https://where-to-buy-chewable-safely.loresiwa.workers.dev/about/): not medical advice, how the site is funded and how guides are made ## Optional - [RSS feed](https://where-to-buy-chewable-safely.loresiwa.workers.dev/feed.xml)