JAMUMU
actually dracula
In low-effort "fun" games, I'll do a straight gp conversion and there'll be no hassle gaining these components. In a game with a more serious tone/playstyle, I make the PCs trek to where you would logically find that stuff. So dwarves or high-end gem-dealers for the 1000gp diamond, or maybe an abbey where they keep them on hand (but then you'd have to persuade them to part with it, and probably pay a premium if you're just 'stocking up'). Expensive incense you could buy from any large religious establishment. Expensive, heavy chests you might need to commission, unless you're in a large city.
Even in cities I'm more likely to ask a player to "roll for availability" for big-ticket component items, rather than them rocking up to Rocko's Classy Components with their pouches open.
Even in cities I'm more likely to ask a player to "roll for availability" for big-ticket component items, rather than them rocking up to Rocko's Classy Components with their pouches open.