Private Douro Valley Wine Tours from Porto

The table turns the page's quartiles into a cost per guest. The cheaper quarter of listings starts at 219.50 EUR, the median is 282.50 and the dearer quarter starts at 320. Capacity matters as much as price: two of the listings we opened cap the booking at four people, one allows eight, so the four-guest column is not open to everyone.

For comparison, the standard small-group day with lunch is 110 to 185 EUR a head on the small-group page and the median river cruise tour is 126. At two guests, private is usually dearer. At four, the median private car is well below a small-group seat. The sum changes once you add what the base price does not cover, which is the next section. At four guests the median car costs roughly what one small-group seat does once you add a 40 EUR lunch each.

The cheapest listings are cheap for a reason. The 206 EUR 'Best-Of' tour from Your Tours Portugal, the most reviewed on the page, is a car, guide and pickup only. Tastings, the 3-course lunch and the boat ride are listed as add-ons to be arranged with the operator. The 477 EUR Mercedes listing lists port tasting at one winery but leaves out lunch and the river cruise, even though its own description mentions a lunch and a rabelo ride. The 612 EUR listing, the dearest, carries wines and port tastings, water and snacks, but not lunch: the listing puts it at 40 EUR a head for a mid-range restaurant, 70 for high-end and from 100 for a Michelin-starred one (closed Tuesdays and Wednesdays).

That is why the eight listings that include lunch have a median of 250.50 EUR against 292.50 for the twelve that do not. The price that looks higher is often the one that has fewer things to add.

On a private Douro page the cheap listing is the one with the longest list of extras. Count the extras before you compare.

The cheapest, at 158.40 EUR (discounted from 180), is a four hour half day. It is also a listing that may not stay in the Douro: its description offers options from a half day in the valley to a full day that adds a farmhouse in Minho, the land of vinho verde, and says only the services in the inclusions are counted. The dearest, at 612 EUR, is a nine and a half hour private driver and guide for up to four. Between them sit a 399 EUR listing that departs from Lisbon and runs 12 hours, the page's longest, with the lowest rating of the twenty at 4.7 from 62 reviews, and a 350 EUR 'Food and Wine' day.

The middle of the page is where the useful listings live. Thirteen of the twenty fall between 206 and 310 EUR, mostly eight to nine hours, nearly all with pickup at the hotel.

This is the only Douro page where the top operator holds less than a fifth of the reviews. Your Tours Portugal has 322 of the 2,073, 16%, on one tour. Living Tours has 245, Oporto & Douro Moments 218 across two listings, Meridian4People 183 across two, Touch Tours 155. The biggest single listing has 322 reviews; the biggest on the cruise page has 5,739. With reviews spread this thin, the 4.93 weighted rating is an average of many small opinions, the highest of the four Douro pages, and a few dozen reviews could move it.

Eighteen operators for twenty listings also means the operator's own name is most likely to be the thing you are buying here.

Four questions settle most private bookings. How many people does the vehicle take, and what is the price for the group size I actually have? Which wineries, and are they guaranteed? Is lunch included, and if not, at what cost a head? Does the price include the boat, or is it an add-on? The answers are in the listing more often than you'd expect, and the 12 that don't include lunch are the ones to read twice.

The mistakes recur. People compare the per-car price to a per-person price on another page. They book a 4 hour half day expecting the valley when the valley is an hour and a half away. They assume a 'private tour' is priced for the number they have, when a booking cap of four quietly excludes a group of five. They schedule something for the evening of a 9 or 10 hour day; one operator warns that the tour may last nine or ten hours and advises against booking anything for the end of it. And they don't check the child seat: one operator supplies seats only from age four.