Skincare costs...?

I have extremely dry skin, so actually I experience more trouble than breakouts.

I'm worried about wrinkles and dryness, but even after a few skin care treatments...

I don't really notice a big difference; it just feels like someone else keeps applying the product for me.

Do you have any management recommendations? Also about the cost.. haha

Please recommend some places if you are in the Gangnam or Geumcheon area in Seoul!