performance power pro tool set?

i have the special offer set from B/Q, which i thought was a great purchase at the time.now i`m having real problems with the batteries as they no longer hold their charge for long, and went to look for replacements,apart from B/Q no longer stock these replacements i find it truly discusting that the price of these batteries are some what exspensive,and now have a dilema as to whether i should trash my perchase of tools from B/Q,even refurbishing the batteries is costly,this company is definately ripping of buyers of their products,i may as well go back to using corded tools.