When you think about buying home gym equipment on a larger scale you are probably looking at a higher up-front cost. What I'm saying is that most of the time you will purchase a piece of equipment and pay for it in full. Although in this day and age of credit, many companies will finance the equipment for you so you can make monthly payments. If you go this route watch out for the interest rate.
Exercise equipment for your home can have a wide price range depending on what you want. Below I've listed some of the price ranges for cardiovascular equipment.
Stationary bikes -- $200-$500
Treadmills -- $200-$8,000
Rowing machines -- $200-$3,500
Cross-country ski machines -- $300-$750
Stair steppers -- $50-$3,000
Elliptical trainers -- $300-$3,800
As you can see there is a wide range in the pricing. For the most part, the upper end of pricing is more representative of commercial quality equipment. If you and your family will be the only ones using the equipment, then a commercial unit would be overkill.
Strength training equipment can also have a wide price range depending on what you get. You can go as simple as some dumbbells for $4 a pair, as I mentioned earlier, or you can buy a multi-station strength training machine ranging in price from $250 to $5,500. Generally speaking, the higher the price the more exercise options you get on the machine.
If you don't want to buy something brand new then you can consider a pre-owned piece of equipment. Check your local newspaper or stores that sell used equipment. However, make sure you see the equipment before agreeing to buy it. Safety should be your number one concern.