elastic
adjective
uk/ɪˈlæstɪk/ us ECONOMICS
relating to a situation in which the number of products sold changes in relation to the product's price:
We're seeing the elastic effect of lower component prices encouraging demand for PCs.
Your problem is that you are in an exceptionally elastic market and your prices are simply not the lowest.
Luxury goods are price elastic.
able to change when conditions change:
International law must be elastic enough to meet new conditions created by change and progress in the world.