We bought a Safe and Sound Capsule for both DD's which they were in until they were 12 months old. Once they had stopped using them we sold them as they had been purchased new and had been in no accidents. The most recent we paid about $300 for and sold it for more than $200 so we paid less than $100 for the 1 year. We then put the money we sold it for towards a car seat that went to 24kg.

So that could be an option to buy a new one and then sell it. I have seen them go for good prices on eBay.