Am I missing something on the newish IM 240 gallon? I was about to order the version with a stand, not compete system with sump, but the price seems off. The 240 ext is $5670.50, thats 23.63/gallon. The 200 ext is $3583 which is 17.92/gallon. Why is there such a huge jump in price for 40 gallons? The glass thicknesses are all the same. That’s $2200 additional for 40 gallons.