The best thing to do would buy a male co-dom/dom and then breed him to a whole lot of females. It would depend on the morph you want to produce if you are looking to wait I would get a baby spider or pin 3-400 on average and then buy a big lot of baby to sub adult normal females but remember when you buy the snakes you also need cages for them, if you look to buy cages check out reptile basics or animal plastics, if you want to build I suggest you check out Tim Baileys site its where I got my ideas for my cages. If you want to produce this year look into buying normal females and a pastel male, with what ive seen on the web you could get the pastel adult for $200 and then the females you could get possibly 6 or 7 breeder size but if 1k's your budget for cages as well I would guess the pastel and 4 females. Building a rack for adults cost me about $200 without a thermostat or heattape and a baby cost me about the same maybe a little more.
Hope I was of help.