code: func (h *Handler) GetClientOfferingsFilterParams(
  	tkn string) (*GetClientOfferingsFilterParamsResult, error) {
  	logger := h.logger.Add("method", "GetClientOfferingsFilterParams")
  
  	if !h.token.Check(tkn) {
  		logger.Warn("access denied")
  		return nil, ErrAccessDenied
  	}
  
  	countries, err := h.offeringCountries(logger)
  	if err != nil {
  		return nil, err
  	}
  
  	min, max, err := h.offeringsMinMaxPrice(logger)
  	if err != nil {
  		return nil, err
  	}
  
  	return &GetClientOfferingsFilterParamsResult{countries, min, max}, nil
  }
docs: // GetClientOfferingsFilterParams returns offerings filter parameters for client.