Walmart offers the DuneCraft Odd Pods Cacti Growing Kit for $8.29. Opt for in-store pickup to dodge the $5.97 shipping charge. That's the lowest total price we could find by $6. The kit includes one planting pod with spill guard, two 1-oz. bags of moon rocks and crater dust, one packet with 150 seeds, three scenic background cards, one 1-oz. bag of planting mix, one sprouting greenhouse, one watering tube, and an instruction sheet.