Yes getting all the gear and ancililaries can be expensive... But it's nothing compared to the price of the food you'll have to eat. Others have said this.... But let me repeat it. You must eat an ENORMOUS ammount of food to make the cycle worthwile. Bodybuilding is not at all efficient. You'll be starting a game which will require you to double your caloric intake regularly and constantly to get and maintain your gains. 4000+ lean, clean, high protien calories DAILY is expensive. You can knock down the price if you think "third-world" Rice, beans, oatmeal, sweet potatoes, eggs... All great foods for muscle.... But lower in calories... So you have to eat alot of these. But meats must be lean... Usually the more expensive cuts.
So if you're working out already, my best advice is to try adopting a BB diet first, while you're researching roids. Eating 4000+ calories is almost a full time job in itself. Your new diet will fuel new killer workouts... So you'll seek out better training. And you will make gains naturally, a skill few new guys take the time to learn. Remember, even when you get on the "roid roller coaster" you'll be training "natural" most of the time.