actually several components on this BOM (for my solar powered alba generator) have gone up 2x–5x since the last time i did a full order (a year ago). not the end of the world, but it's still annoying, especially when it's a part that had been a little treat to simplify the schematic and bring down part count, but is now one of the most expensive parts in the BOM (e.g. https://www.digikey.com/en/products/detail/texas-instruments/TPS2105DBVR/382078)