Kumho tyres for Hyundai Tucson - how much?

Guys,

Last week I running along SLEX with totally flat tyre (left rear). I managed to drive to one of the stops and got my spare on.

The flat tyre is not reparable and needs replacement and now I got the quotation from Hyundai Alabang - almost 12,000 for 1 Kumho tyre!!

Is this reasonable?

I seem to remember 10 years ago I got 4 new goodyear tyres for my corolla for less than 15000.

Any recommended place to get tyre replacement?

Thanks