Inflation is a broad economic phenomenon, the price of a single component is not a good indicator for it. A lot can change in a few years. Look at what's happened with capacitors, manufacturers are shifting to product lines that are more profitable, leaving less supply of basic commodity parts, so prices jump until the market settles back down. Getting into the game of making components is hideously expensive and it takes while to get started, and shifting production focus isn't much faster or cheaper, so because there's little elasticity in the supply the market has to react to changing supply and the price changes. 4k is nothing in terms of quantity.