Yes 300-400 rs products are available too , but I personally always use and recommend good reputed brands . They cost a little more but are more efficient , and durable . Its a personal choice .
Regarding the enclosure vs docking station ,
Again its a matter of personal preferance ,
If u do a lot of swapping like me , docking station is the way to go ...
Otherwise if u want to carry it around , go for enclosures , but the size these enclosures carry make it practically fail when it comes to mobility .
So I would ( as a personal preferance) want a docking station , for frequent swaps ..
While the choice is free according to their need .