bargain, reason, charge, suspicion, point, account, purity, honest, low price, cheap, rested, contented, peaceful
JLPT1 G7 S13 F2066
As per 兼# (gather then put/store away) + 广 building → gather a series of objects and store them away indoors. *Purity*, *honesty* and *cheap* are borrowed meanings.
[Full Kanji Etymology List]