unaffordable

adj. /ˌʌnəˈfɔːrdəbl/ C1

买不起的；难以负担的

Too expensive for people to be able to buy.

仙境例句

The finest hat in the box was unaffordable for a little Dormouse with no pockets.

盒子里最好的那顶帽子，一只没有口袋的小睡鼠可买不起。