A 70% efficient power supply in a computer that needs 100 watts of power to operate will actually draw 130 watts (the extra 30 watts are lost as heat by the power supply). If a new 85% efficient power supply was installed the same system would then draw 115 watts.
1 The average prices for the basic cat blood work ranges from $75 to $175 per test. 2  It greatly depends on the type of test and how many tests are needed for your pet.
I currently have one cat who is about 9. I take her in for a yearly checkup with bloodwork (CBC/Chem) and that costs me about $70-$100 depending on whether or not I elect vaccines. (she is strictly indoors, so I try to push off vaccines to about every 2-3 years).