Legally get away with? I can raise rents 10,000% if I wanted to, but obviously nobody would pay it.
As to the last time I lowered rents, that would be Wednesday of last week. It's crunch time and we have 5 units left to fill before winter. Those 5 units went on a fire sale of sorts. They'll fill this week because they're way under market now, and then when we send out renewals in spring, we'll send them for actual market rate. Those people are going to see a 15-20% increase in rent and maybe call me an *******, but in reality they just got a sweet discount because we didn't want an empty unit over winter.
The price of finished goods will absolutely fluctuate up and down based on material costs. If Joe's Pencil Shop stays at pandemic pricing forever, they're going to lose more and more business to Walmart, who uses algorithms for pricing. Then you have Amazon, which bases their entire business model on being the lowest price for everything at all times. Amazon has bots crawling the internet 24/7 and will constantly adjust pricing.
Price of 150 Amazon pencils: