I have the same problem - spend weeks or more farming mundane runes and then it only takes 10 minutes to completely use them up crafting housing furnishings.
Hard to make any progress.
Khajiit Stamblade main
Dark Elf Magsorc
Redguard Stamina Dragonknight
Orc Stamplar PVP
Breton Magsorc PVP
Dark Elf Magden
Khajiit Stamblade
Khajiit Stamina Arcanist