I can appreciate you wanting to get your feet wet before jumping into a major purchase. However buying cheaper pools usually results in more equipment and break fix maintanance. These pools tend to come with very cheap accessories and pump/filter equipment.

Any pool regardless of size will require:
1. Perfectly level ground for installation
2. Regular water chemistry adjustments on a daily sometimes weekly basis
3. Filter and Pump maintenance
4. Frequent Pool cleanup tasks
5. Never ending list of accessories, chemicals and toys to buy

Most of my neighbors with the Walmart pools throw them away after the 1st year. I don't know about the Easy Set Pools.