Why have prices gone up recently?

Three main factors: the cost of raw materials has risen substantially; 25% Tariffs have been imposed; UPS has raised shipping costs noticeably.  Also, China has (finally) gotten serious about air pollution and has mandated smog control for all factories immediately – (All crystal litter is manufactured in China). Other variable costs, such as ocean freight, have increased.  The end result is good for the environment but not the pocketbook.