I would say 40% more, LOL! For me it was worth it. Took 4 months to get mine, but I was not in a rush, still am not a year later and its not wet yet :headwally:
If you appreciate the highest quality, and perfect seams, straight edges, attention to detail, then go with reef savvy. If you just want a nice looking tank, not necessary. If I ever have another tank made, I would not hesitate to have another reef savvy made.