You're not getting a good turbo kit for 1000 or lower.
The turbo for my car, cost $2200, just for the turbo. All the other piping, etc, was another 1500.
You could go cheaper, but you're getting what you pay for. I could slap some metal together, call it a turbo, and charge you $500, but see how long it lasts.... This would be pretty much all the eBay "turbo kit"s. Look at their kits. The pipes are just randomly bent pipes. They will not fit your vehicle. None of the parts are name brand parts. It simply will not last.
Performance costs money. If you're not willing to shell out, your car isn't willing either.