Doughboy " Aquaview" sand filter parts

My not quite 2 year old sand filter " always stored inside in winter" tank developed a leak on the bottom along the seam.
It is being covered under warranty, but in the process of someone from the pool store making a visit to verify and then ordering and scheduling a day for repair is going to be around 4 weeks total.I run my pump 24/7 so I do lose a lot of water and causes me to really stay up on pool water condition.
I decided to check where to purchase one in case it happens again, Aquaview 0-1709-020.
Anyone know why in the world it is almost impossible to get parts such as this other than my pool store 1 hr away?
Doing a web search directs me to only one place in Oklahoma, but cant sell outside the state.