The necklace stand needs another 12 – 5 = <<12-5=7>>7 necklaces.
This will cost the store 7 * 4 = $<<7*4=28>>28.
The ring display needs another 30 – 18 = <<30-18=12>>12 rings.
This will cost the store 12 * 10 = $<<12*10=120>>120.
The bracelet display needs another 15 – 8 = <<15-8=7>>7 bracelets.
This will cost the store 7 * 5 = $<<7*5=35>>35.
In total, the store needs to pay 28 + 120 +35 = $<<28+120+35=183>>183.
#### 183