Puppies cost three times more than parakeets, or 3*$10=$<<3*10=30>>30 per puppy.
Parakeets were half as expensive as the kittens, or 2*$10=$<<2*10=20>>20 per kitten.
Two puppies cost 2*$30=$<<2*30=60>>60
Two kittens cost 2*$20=$<<2*20=40>>40.
And three parakeets cost 3*$10=$<<3*10=30>>30.
Thus, the cost to purchase all of the pets for sale at the pet shop is $60+$40+$30=$<<60+40+30=130>>130.
#### 130