In korea will i be able to find dvds of old dramas?

Im planning to go to korea in the near future and i was wondering if i will be able to find dvds of old dramas there which i can purchase 

im talking about dramas where you can't watch online ive tried to look for a lof of them but theyre too hard to find. The ones i do find dvds of are  insanely expensive like 200-300 usd.

SO will i be able to find these drama dvds easily like from any local shop or will i have to go to some special shops or is it hard to find dvd of old k-dramas

also if anyone knows a good shop with pretty much any k-drama in  seoul  can u please put down the adresss

It is hard to find this dvds! I didn't find any but I didn't spent really a lot of time for the search. 

It is easier in countries like taiwan (there I found a lot of korea drama dvds)

 Czakhareina:

I agree with @boredandtiwtchy. KYOBO book Store.

That was highly recommended by our host when I asked about old kdramas dvds. Though I was not able to visit because of time constraint. 

BTW, what dramas are you looking for? The old ones like: Sandglass, Eyes of Dawn, Shoot me in the heart, Feelings,Jjealousy, school series? If you happen to find them. Please let us know. I want to buy those when  i visit next time.

yes those are some of the ones im looking for and i will let you know if i do find them