bhai sab its the same story for every car with used car dealers, basically they only have corolla, the reason behind this is that they have those cars that have been used on rent a car, car owners dont rely on dealers anymore
I was in the market for used civic or grande a couple of weeks back, the entire used car dealer market in Isb was not able to produce a single clean home used car, they only have to offer badly beaten cars with loads of repaint or paperwork issues... since Yaris has not yet been off-fleat yet from the rent a car centers thereby, they dont have it to offer.
Never go to a dealer to buy or sell a car, they basically are their to rip you off.... sell it on pakwheels, olx or newspapers, similarly buy from direct owners, people with cars on their own names, preferably first owners or cars with service history. Use paint tester tool to verify body condition, dont trust anyones word and always take a test drive and one last thing, never forget to take a look from the underside...
As for Yaris's resale, its fine, not bad at all, like everything else, due to high prices, market has slowed down and will pick-up gradually. Those who bought Yaris in 2020 are getting a millon extra after using it for two years, their profit is much higher that civic owners or even corolla owners. Ativ X 2020 is selling between 35 to 40 depending upon condition and milage, it was bought brand new for 28 while 2020 gli/altis 1.6 that was bought for 32 to 36 back in 2020 is available at a similar price or even below, comparitively, yaris is fetching more profit.