Hi Steve. Rather than speak in generalities, since some are cheaper and some more expensive, here’s a link you may find helpful. It is for Fybeca, a local pharmacy chain. There is a search box up top, where you can search for the drugs in questions. IF they are available here, you will also get pricing.
https://www.fybeca.com/FybecaWeb/pages/home.jsf
It is in Spanish, but your browser probably provides translation. May not be necessary, it is pretty straight-forward. Remember you may need to use the generic drug name, rather than the brand name. Although I did, for example, just find Nexium 20MG listed, box of 14 tablets for $18.62 ($1.24 ea).
Hope that helps!
-jim