I commonly find second hand IKEA sideboards in teak here in Sweden, mid-century design is still sought after and nicer IKEA furniture from the 60s/70s sells for quite a mark-up.
My office desk is an IKEA butcherblock beech top on IKEA legs, our former dining table. A wedding gift from my mother 33 years ago. I think 70 is entirely plausible. One good sandbank and re-oil and it's good for 40 more.