they are expensive because of the filtration and lighting that come stock with them. it is actually a very nice set up. 10 k lights, the true actinics. the filter is an integrated wet/dry filter . it has Submersible pump with flat return nozzle.and the dual action filter cartridge and Min./ Max water level indicator helps keep your water changes on schedual.and keeps you from letting it get too low**what ever you use as your mental excuse for not doing your water changes*L* mine changes from time to time, but this tank helps keep ya in line*S* they look good when they are lite up. and dont make alot of gurgly noise. all together a good set up. Hope this helps ya out a bit