Anchor: If you are in search of a particular item, look in  fixed-price  shops first to get some idea of what you are likely to have to pay.
Entailed: Medium price can be found if you search in fixed-price shops.
Contradiction: All the prices are variable, meaning that a product can have different prices for different situations and customers.
Contradiction: Always include entities, even if they have no historical data.
Contradiction: being the only one must be tough, yeah
Contradiction: a man is sitting on his couch
Contradiction: Although a combination increases the risk of over payments, this can be mitigated if the developed sampling plan ensures saving exceeds cost.