What looks expensive, but it's actually very cheap?

When my monthly salary was in 98 yuan, I once bought a pair of slippers for 25 yuan. How can I put it? It is equivalent to white-collar workers in first-tier cities spending 2000 yuan on a pair of slippers. Then I wore those slippers for 19 years, and I was forced to retire in 20 10 years. Later, no new pair of slippers was more comfortable than it. It looks like a pair of ordinary slippers with foam soles. However, the soles showed no signs of wear during 19, and I still wore them for a walk downstairs. In nineteen years, my weight rose from 140 to 180, and the soft soles were not thinned by me. In the same year that I bought this pair of slippers, 3 yuan Qian bought a kitchen knife at the stall. There is a gourd-shaped inscription on the blade with three words: three gourd. It seems that the blade was hit with a steel guide when the temperature was still high. This knife is still in use now, and its sharpness is second only to that of Bigren. Accustomed to its weight and the shape of the handle, I will use other knives in Zbigren's suit when cutting bones and fruits, but I always use it instead of Zbigren when cutting vegetables.