If you have a Steam Deck with an LCD screen and its battery is starting to fail, repairing it has become surprisingly expensive. The official replacement battery for the original model has gone up in price again at iFixit and now costs $179.99 for the battery alone, or $184.99 for the complete repair kit. To put this into perspective, the battery originally launched at $79.99. Just a few weeks ago, it returned after a period of limited stock at $129.99, and this new $50 increase means its price has now jumped by 125% compared to the original price. Steam Deck
A lot of the time the third party parts are made in the same factory on the same lines. Often their contracts are for X amount of product and Y quality. Only when you get to massive companies and products like Apple and the iPhone do you actually get third party factories producing copied parts.
Most are just the same factories producing extra product by running the lines for extra hours, at a faster speed, etc. and taking both the extra product and the product that barely failed the quality control for some reason but can be sold as B stock on the grey market. A lot of “counterfeit” products are legitimate in every way, just not authorized by the manufacturer.