I am in the process of purchasing a 72 gallon reef ready bow front. For starters how is this price of $275 for the following used equipment?

Coralife Deluxe Series Aqualight Fixture – Double Linear Strip –
Aqua Medic TurboFlotor 1000 Multi Protein Skimmer
Red Sea WaveMaster Pro with 3 Maxi-Jet MP900 Power Heads
Hagen Water Test Kit.

What additional equipment do I need to have a complete setup? My LFS rec'd a $250 dollar oceanic bio ball sump. Options?

Thanks