{'Item': {'ApplicationData': 'my sku',
          'AutoPay': True,
          'BestOfferDetails': {'BestOfferEnabled': False},
          'BuyerRequirementDetails': {'LinkedPayPalAccount': True,
                                      'MaximumBuyerPolicyViolations': {'Count': 3,
                                                                       'Period': 45},
                                      'MaximumItemRequirements': {'MaximumItemCount': 5},
                                      'MaximumUnpaidItemStrikesInfo': {'Count': 9,
                                                                       'Period': 'Days_40'},
                                      'MinimumFeedbackScore': -2,
                                      'ShipToRegistrationCountry': True,
                                      'VerifiedUserRequirements': {'MinimumFeedbackScore': 4,
                                                                   'VerifiedUser': True}},
          'CategoryBasedAttributesPrefill': True,
          'CategoryMappingAllowed': False,
          'ConditionDescription': 'new?',
          'ConditionID': 'USD',
          'Country': 'USA',
          'Description': 'words and words',
          'DisableBuyerRequirements': True,
          'DispatchTimeMax': 4,
          'GetItFast': False,
          'HitCounter': 'BasicStyle',
          'IncludeRecommendations': False,
          'InventoryTrackingMethod': 'ItemID',
          'ItemSpecifics': {'NameValueList': {'Name': 'more names',
                                              'Value': 'more values'}},
          'eBayNowEligible': False}}

class AddFixedPriceItem(Universal):

    ##Should be your listing_sku, not to be confused with the real product sku:
    def application_data(self, sku):
        if len(sku) <= 32:
            self.query['ApplicationData'] = sku

    def auto_pay(self, tf):
        if tf in [True, False]:
            self.query['AutoPay'] = tf

    def best_offer_enabled(self, tf):
        if tf in [True, False]:
            self.query['BestOfferDetails'].update({'BestOfferEnabled' : tf})

    def linked_paypal(self, tf):
        if tf in [True, False]:
            self.query['BuyerRequirementDetails'].update({'LinkedPayPalAccount' : tf})

    ## period is represented as Days_30, Days_180, etc
    def max_buyer_violations_count(self, cnt):
        self.mbpv['MaximumBuyerPolicyViolations'].update({'Count' : cnt})
        self.query['BuyerRequirementDetails'].update(self.mbpv)
        
    def max_buyer_violations_period(self, period):
        self.mbpv['MaximumBuyerPolicyViolations'].update({'Period' : period})
        self.query['BuyerRequirementDetails'].update(self.mbpv)

class Query(AddFixedPriceItem):
    def __init__(self, **kwargs):
        self.item = {}
        self.item['Item'] = {}

        self.query = {}
        self.query['BestOfferDetails'] = {}
        self.query['BuyerRequirementDetails'] = {}

        self.mbpv = {}
        self.mbpv['MaximumBuyerPolicyViolations'] = {}

        self.mir = {}
        self.mir['MaximumItemRequirements'] = {}

       ### etc......

        for k in kwargs:
            self.query = dict(zip(self.KEYS[k], value))
        self.item['Item'] = (self.query)