Home Depot via Google Express offers the Milwaukee Hole Dozer General Purpose Bi-Metal Hole Saw 20-Piece Set for $109 with free shipping. That's the lowest price we could find by $22. It includes 20 blades in 13 sizes from 3/4" to 4-1/2". Note: New Google Express customers can apply coupon "MARSAVE19" to cut the price to $87.20.
You don't need to hire a contractor or do extensive renovations to add value to your home.