godan verb (-ru), intransitive verb
be able to get a discount; be reducible in price
Intransitive potential form of 負ける (sense 5, 'to reduce price'). Used when the seller can lower the price, or the price itself can be reduced. Often in the negative まからない to mean 'cannot give a discount'.
See also: 負ける
これ以上はまかりません。
I can't reduce the price any further.
あの店はなかなかまからない。
That shop hardly ever gives discounts.