There is no option to buy the regular straight balsa counters. Also that is the only option for the other counters. This doesn't make sense.
Having a Baby in The Sims Mobile [Complete Guide]
Locations in the Sims Mobile
The Sims Mobile Player Level: Guides & Tips
Writing Hobby: Tips & Rewards
Yoga Hobby: Tips & Rewards
Aging and Death
Energy: How to Gain & Boost