Of all the purchases Randy Wagner made in his life, one in particular likely saved all the others.

The resident of Rosharon, Texas, watched his neighbors' homes go underwater as the Lone Star State dealt with persistent, severe flooding this spring – especially in southeastern Texas, where Wagner lives. Realizing the floodwaters would indiscriminately claim his residence as it was doing to all the others, Wagner turned to an online product known as AquaDam to protect his home and everything inside.

“I was the crazy guy. Everybody was kinda going by, laughing at me. But today they are really impressed with this AquaDam,” he told WFAA.com.

(MORE: Water Rescues Occur in Texas, Oklahoma as Floods Persist)

AquaDam, according to KHOU.com, is a series of tubes that can be filled with water to protect areas from flooding. Made from plastic and fabric, the tubes stretched 400 feet long and were 30 inches tall after Wagner and some friends filled them, the report added.

The online purchase cost Wagner more than $8,000, but his neighbors will likely pay far more to fix their flood-damaged homes.

“$8,300 is to me a small investment on a house that could have two feet of water in it and cost me $150,000 in repairs,” Wagner told KHOU.com.

Flooding has been an enormous problem in Texas this spring. Earlier this month, 16 people were killed by another round of flooding across the Plains. The floods affected Brazoria County, Texas, where Wagner lives, as a days-long mandatory evacuation was ordered for parts of the county.

At Wagner's home, floodwaters rose as high as 27 inches during the recent flooding, but never overtopped AquaDam, he told WFAA.com. For Wagner, the quirky purchase was worth every penny.

MORE ON WEATHER.COM: Spring Flooding in Texas