Sorry, real life intruded.
You might consider garage sales, often folks are trying to get rid of old stuff that you could use.
A good cabinet maker would charge as much if not more than a premade stand would cost at the LFS. But just because the tank is odd shaped doesn't mean the stand has to be also. A rectangular stand would work if it is centered and balanced properly, a lot cheaper too.
Try to be patient (I know hard to do sometimes) if you can't find what you need right a way maybe you could save up your money until you can afford it.
Sorry my advice isn't better, but the options are a little slim for an odd shaped tank like this one.
Moby