I gave my DGM a present of a new kitchen as hers was falling apart, literally 25 years old with appliances conking out and (IME) borderline dangerous.
I went to a well known high street kitchen designer/supplier and was quoted 11k including all appliances e.g. Fridge freezer, dishwasher, oven, washing machine.
We agreed on the price and yesterday someone came round to measure everything up.
Today I get a phone call apologising that the original quote was way off due to lack of experience on the person who I dealt with and the real cost is closer to 15k. 
AIBU to be suspicious that this is a cynical business move, reeling you in then shifting the goal posts once you're invested?