Not normal!!
Generally the company arranges for the visa and all costs are paid by them. In any case thats a lot of money only for the residence visa. Go to one of the typing centers and find out how much it costs.
The company is responsible for your visa and all associated fees. They are not however duty bound to cover the cost of visas for your family. Many companies do pay for the family visas, but it isn't compulsory for them
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