re: cotbed. I got a whole Mamas and Papas set (cotbed, wardrobe and drawers) second hand off Ebay for ??300 (should be baout ??650). It looks brand new. Cot just needs a clean and a new matress. I also got a whole set of bedding, curtains etc second hand off Ebay for ??55 should be about ??200; this is also Mamas and Papas, and again looks brand new.
I highly recommend looking for second hand bargains as it can be so expensive.
Re: pushchair. My mother-in-law has purchased this for us so had a budget of ??500. Otherwise not sure what we would have done. Probably would have waited for Sales.
Hope this was helpful x