Of course any designer or contractor worth their salt isn't going to be able to provide a reliable average price without a whole lot more information. The "average" price could be anywhere between $15K and $50K depending upon the city, size, materials, extend of the renovation, appliance preferences, etc.
Here's a for example, my firm recently did a
small condo kitchen renovation in Boston MA and found several ways to help our cient achieve her project objectives while saving thousands. Total cost for this kitchen including labor, my total $299 in design fees and all appliances and materals was under $14K.

We helped get the most out of our clients budget while still making this condo kitchen look custom and expensive using in-stock
big-box store cabinets. The secret to success was in the unique
layout and avoiding the temptation to put a cabinet on every
available wall. We saved our fabulous client lots by using cabinet
doors instead of drawers. We also ordered the glass door
frames without the glass and then purchased the glass from a local
vendor. Sourcing glass locally saved over $100 per door! We
ran slate, the least expensive stone
tile, on a diagonal pattern for upscale-styling. Our splurges
were the Ceasarstone counter-top and glass tile backsplash.
Source: http://hmdhome.com/online-i..
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