Baby Trolley in Warsaw

Maybe someone from Warsaw could help; I am coming Warsaw and have a plan to buy a baby-trolley; I am not sure where can I expect to find a big range on display and also value for money; I have Carrefour in mind, but am not aware if I should look elsewhere too.

Thanks in advance;

Jupiter Centrum on ulica Towarowa has a big baby shop with a range of push chairs. It's very central and not too far from the Sobieski hotel.

Thanks;

Any more location to find a range of baby trolleys in Warsaw appreciated too.

"SMYK" - Al. Jerozolimskie/Bracka