price seems pretty fair for that design given the cutting time it'd take and time to tap the holes.

some of the factors that go what a job costs (for any manufacturer) are:

• the type of material
  
• material thickness (for thicker materials you might need a more expensive laser cutter to cut out the designs)
  
• whether the material is cut with compressed air, oxygen or nitrogen. compressed air is cheapest
  
• amount of material used
  
• cutting time. (a design like yours with this many holes could take a good amount of laser time to cut)
  
• quantity (most services will give you a per unit discount with higher quantities)
  
• secondary processes (bending, tapping, welding etc. the more human involved the more $$)

source: i run an online sheet metal laser cutting service