The first cage looks alright for a young hamster in that it has nice solid levels and the sides appear to be barred for ventilation, with a nice deep base for them to dig around in but I would email the seller and ask for dimensions. Wonder where access is gained from? The second cages are okay too. Many hamsters live their whole lives out in these "Argos" style cages.
They are in the EXTRA Catalogue £19.99:
Hamster Cage
I'd go for something like this
Ferplast Laura if you want a two level wire cage.