Every link on this site goes to the shop of the person who made the clip. That is not a courtesy — it changes what you get and what happens to your money.
The reposted copy is usually worse
Material that ends up on aggregator sites has been re-encoded, often twice: once by whoever ripped it, once by the host. Audio drifts, dark scenes turn to blocks. The original file has none of that, because it never left the producer’s pipeline.
You can ask the person who filmed it
A shop has a contact route to an actual human. If you want to know how long a clip really is, whether there is talking, or whether he does custom work, you can ask before you spend anything. On a repost there is nobody to ask.
Money that reaches the producer buys the next clip
This is the practical argument rather than the moral one. A performer who earns keeps producing, and a directory that points at the source stays useful for longer than one that points at a mirror which will be dead in six months.
What to check before you buy
Runtime, whether a preview exists, and whether the description names what is actually in the scene. A clip page that shows none of the three is telling you something.