why not look into hiring a capsule, depending on where you live there is a company called hire for baby that hire the babylove snap'n'go & unity capsule which both come with a stroller/pram and you can sometimes hire them for a fraction of the cost o buying the whole set, of course you could always buy the stroller & hire the capsule, especially since you will generally only use the capsule part for approx 6-8 months

anyway just a thought..