Comparing vendor quotes at parity of scope, line by line

7 September 2026

Three quotes for the same brief almost never describe the same thing. The gap on the page is rarely the real gap, and finding the real one takes more than reading three totals side by side. Here is the method I use and what it looks like on an actual comparison.

Same brief, different scope

Send the same brief to three vendors and you get three documents that look comparable because they answer the same request, on the same date, for the same headcount. They are not comparable, because each one has made its own silent decisions about what counts as included.

One prices five hours of staff and treats the sixth as overtime. Another prices six and calls it standard. One lists transport as a line, another folds it into the base rate, a third leaves it out entirely and expects you to ask. None of this is dishonest. It is just how quoting works when there is no shared template, and it means the number at the bottom of the page is the output of a dozen decisions you cannot see from the total alone.

Ranking three vendors by that number is ranking three different products.

The lines that have to match

Before comparing anything, I bring every quote back to the same scope. The lines that move the most, in order of how often I find them missing:

• Staff hours and headcount. How many people, for how many hours, and at what rate the hour past that point is billed.
• Transport and delivery. Included, itemised, or absent and assumed.
• Rental of anything not consumed. Crockery, glassware, furniture, linen: sometimes bundled, sometimes a separate invoice.
• Tax treatment. Whether the figure is quoted with VAT included or excluded, which changes the comparison by the full rate if you miss it.
• Deposit and balance schedule. Not the total, but when each part of it is due, because it affects cash flow even when the total is identical.
• What happens on a change of numbers or a postponement. Rarely priced upfront, always relevant once it happens.

Getting these answers usually takes one direct question per vendor rather than a guess from the document. It is tedious, and it is the only part of the job I have never found a shortcut for.

A worked comparison

A seated dinner for 120 guests, three caterers, the kind of spread I see routinely: Vendor A at €16,800, Vendor B at €14,900, Vendor C at €18,600. Read as totals, B is the obvious choice, almost €2,000 under the next cheapest, and C looks like the one to drop first.

Filled in row by row it read differently. B's figure covered four hours of service against six for the other two, with the fifth and sixth hour billed at a rate that erased most of the initial gap on its own. C's number, the highest on paper, already included the crockery and glassware rental the other two listed as an extra. Once every quote covered the same six hours, the same rental and the same transport, B's real total moved past €17,300 and C's landed under A's. The vendor that looked cheapest on the page finished in the middle once the scope matched.

This is not a rare result. On comparisons I run this way, the initial ranking holds less often than it flips.

When it is worth the time

Realigning three quotes properly takes real hours, so I do not spend them on every line item. It goes on the ones where the spread is real money: venue, catering, technical production, the three that carry most of an event's budget on their own. On a smaller line, printing or florals, the time the exercise costs is worth more than what it could save.

The line-by-line method sits inside a larger discipline: a budget that gets checked against reality at every signature, not just at the end. I have written about how that document is built in the corporate event budget: how it is built.

For the stages this fits into, start with how to organize a corporate event in Italy. On the mistake this exercise prevents, see the mistakes that cost the most. Getting quotes to a comparable scope is part of the event management service.