The adjective 实惠 (shíhuì) describes something that offers good value for the price — affordable and practical. It is commonly used to praise products, services, or deals that give you a lot for what you pay. For example, 价格实惠 means "affordably priced."
这家店的东西又好又实惠,我经常来。
Zhè jiā diàn de dōngxi yòu hǎo yòu shíhuì, wǒ jīngcháng lái.
This store has good and affordable products; I come here often.
学生套餐特别实惠,才二十块钱。
Xuéshēng tàocān tèbié shíhuì, cái èrshí kuài qián.
The student meal deal is really affordable — only twenty yuan.
网上买比实体店实惠多了。
Wǎng shàng mǎi bǐ shítǐ diàn shíhuì duō le.
Buying online is much more affordable than buying in a physical store.