Jeez some of those prices are outrageous .
If you want to charge Nicads then make your own charger for a couple of quid .
First , buy a battery holder , as in the back of your transistor radio , for the size you want to charge .
Second , buy a resistor that charges them at one tenth of their capacity . Battery = 1000mAh ? Then get a resistor and solder it into the positive terminal of the battery holder .
I=V\R , so .100=12\?? Nearest value is 150 ohms ( 1/2 a watt rating on that resistor ).
Buy a coupla alligator clips for the lead to the battery holder ( with resistor ) and job is done .
Then you will ask how they can charge so much in the shops ....