11.5kw w/10kw battery for £12.6k - seems reasonable?

Have been offered this with for £12.6k with close to 0% finance, does it look reasonable to you?

  • 25*460w panels (Unknown brand, 25yr warranty)
  • 1x Fox ESS 8kW inverter (10yr warranty)
  • 1x Fox ESS 10.36kWh battery (10yr warranty)
  • Bird protection